The error function in excel

Метод WorksheetFunction.Erf (Excel)

Возвращает функцию ошибок, интегрированную между lower_limit и upper_limit.

Эта функция была заменена одной или несколькими новыми функциями, которые могут обеспечить повышенную точность и имена которых лучше отражают их использование. Эта функция по-прежнему доступна для совместимости с более ранними версиями Excel. Однако если обратная совместимость не требуется, следует рассмотреть возможность использования новых функций, так как они более точно описывают их функциональность.

Дополнительные сведения о новой функции см. в методе Erf_Precise .

Синтаксис

expression. Erf (Arg1, Arg2)

Выражение Переменная, представляющая объект WorksheetFunction .

Параметры

Имя	Обязательный или необязательный	Тип данных	Описание
Arg1	Обязательный	Variant	Lower_limit — нижняя граница для интеграции Erf.
Arg2	Необязательный	Variant	Upper_limit — верхняя граница для интеграции Erf. Если этот параметр опущен, Erf интегрируется от нуля до lower_limit.

Возвращаемое значение

Double

Замечания

Если lower_limit не является числом, Erf возвращает #VALUE! значение ошибки.

Если lower_limit является отрицательным, Erf возвращает #NUM! значение ошибки.

Если upper_limit не является числом, Erf возвращает #VALUE! значение ошибки.

Если upper_limit является отрицательным, Erf возвращает #NUM! значение ошибки.

Поддержка и обратная связь

Есть вопросы или отзывы, касающиеся Office VBA или этой статьи? Руководство по другим способам получения поддержки и отправки отзывов см. в статье Поддержка Office VBA и обратная связь.

Источник

IFERROR function

You can use the IFERROR function to trap and handle errors in a formula. IFERROR returns a value you specify if a formula evaluates to an error; otherwise, it returns the result of the formula.

Syntax

The IFERROR function syntax has the following arguments:

value Required. The argument that is checked for an error.

value_if_error Required. The value to return if the formula evaluates to an error. The following error types are evaluated: #N/A, #VALUE!, #REF!, #DIV/0!, #NUM!, #NAME?, or #NULL!.

If value or value_if_error is an empty cell, IFERROR treats it as an empty string value («»).

If value is an array formula, IFERROR returns an array of results for each cell in the range specified in value. See the second example below.

Examples

Copy the example data in the following table, and paste it in cell A1 of a new Excel worksheet. For formulas to show results, select them, press F2, and then press Enter.

=IFERROR(A2/B2, «Error in calculation»)

Checks for an error in the formula in the first argument (divide 210 by 35), finds no error, and then returns the results of the formula

=IFERROR(A3/B3, «Error in calculation»)

Checks for an error in the formula in the first argument (divide 55 by 0), finds a division by 0 error, and then returns value_if_error

Error in calculation

=IFERROR(A4/B4, «Error in calculation»)

Checks for an error in the formula in the first argument (divide «» by 23), finds no error, and then returns the results of the formula.

Example 2

Error in calculation

Checks for an error in the formula in the first argument in the first element of the array (A2/B2 or divide 210 by 35), finds no error, and then returns the result of the formula

Checks for an error in the formula in the first argument in the second element of the array (A3/B3 or divide 55 by 0), finds a division by 0 error, and then returns value_if_error

Error in calculation

Checks for an error in the formula in the first argument in the third element of the array (A4/B4 or divide «» by 23), finds no error, and then returns the result of the formula

Note: If you have a current version of Microsoft 365, then you can input the formula in the top-left-cell of the output range, then press ENTER to confirm the formula as a dynamic array formula. Otherwise, the formula must be entered as a legacy array formula by first selecting the output range, input the formula in the top-left-cell of the output range, then press CTRL+SHIFT+ENTER to confirm it. Excel inserts curly brackets at the beginning and end of the formula for you. For more information on array formulas, see Guidelines and examples of array formulas.

Need more help?

You can always ask an expert in the Excel Tech Community or get support in the Answers community.

Источник

Errors in Excel

List of Various Excel Errors

MS Excel is popular for only its most useful automatic calculation feature, which we achieve by applying various functions and formulas. But while using formulas in Excel cell, we get multiple types of errors.

Table of contents

The error can be:

1. #DIV/0
2. #N/A
3. #NAME?
4. #NULL!
5. #NUM!
6. #REF!
7. #VALUE!
8. #####
9. Circular Reference

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For eg:
Source: Errors in Excel (wallstreetmojo.com)

We have various functions to deal with these errors, which are –

Types of Errors in Excel with Examples

1 – #DIV/0 Error

#DIV/0! Error is received when we work with a spreadsheet formula, which divides two values in a formula and the divisor (the number being divided by) is zero. It stands for divide by zero error.

Here, in the above image, we see that number 90 is divided by 0. That is why we get the #DIV/0! Error.

How to Resolve this Error?

The first and foremost solution is to divide only with cells with a value not equal to zero. But there are situations when we also have empty cells in a spreadsheet. In that case, we can use the IF function as below.

Example – IF Function to Avoid #DIV/0 Error

Follow the steps below to use the IF function to avoid the #DIV/0! Error.

Suppose we are getting a #DIV/0! Error as follows:

To avoid this error, we can use the IF function as follows:

2 – #N/A Error

This error means “no value available” or “not available.” It indicates that the formula cannot find the value that we suppose it may return.

• When the source data and the lookup value are not of the same data type:

In the above example, we have entered “Roll No. of Students” as a number, but the roll numbers of students are stored as text in the source data. That is why the #N/A error appears.

Solution 1: To enter the Roll number as text

Solution 2: Use the TEXT Function

We can use the TEXT function in the VLOOKUP function for the lookup_value argument to convert entered numbers to TEXT.

We could also use the IFERROR function in excel to display the message if VLOOKUP cannot find the referenced value in the source data.

3 – #NAME? Error

This error is displayed when we usually misspell the function name.

We can see in the above image that VLOOKUP is not spelled correctly; that is why #NAME? Error is being displayed.

To resolve the error, we need to correct the spelling.

4 – #NULL! Error

We get this error when we do not use the space character appropriately. The space character is called the “intersect operator,” which specifies the range that intersects each other at any cell.

In the below image, we have used the space character, but the ranges A2:A12 and B2:B12 are not intersecting; that is why this error is displayed.

In the below image, we can see that the sum of range B2:B12 is being displayed in cell D2 as while specifying a range for SUM function, we have picked up two references (with space character), which overlap each other for range B2:B12. That is why the sum of the B2:B12 range is displayed.

#NULL! an error can also be displayed when we use intersect operator (space character) instead of:

• Mathematical Operator (Plus Sign) to sum.
• Range Operator (Colon Sign) to specify the start and end cell for a range.
• Union Operator (Comma Sign) to separate individual cell references.

5 – #NUM! Error

This error is usually displayed when a number for any function argument is found invalid.

Example 1

To solve the error, we need to make the number positive.

Example 2

MS Excel has a range of numbers that we can use. The number smaller than the shortest number or number greater than the longest number due to the function can return an error.

Here, we can see that we have written the formula as 2^8000, which yields results greater than the longest number; that is why #NUM! Error is being displayed.

6 – #REF! Error

This error stands for reference error. This error usually comes when

1. We accidentally deleted the cell which we referenced in the formula.
2. We cut and paste the referenced cell in different locations.

As we deleted cell B7, then cell C7 shifted left to take the place of B7, and we got a reference error in the formula as we deleted one of the referenced cells of the formula.

7 – #VALUE! Error

This error comes when we use the wrong data type for a function or formula. For example, we can add only numbers. But if we use any other data type like text, this error will be displayed.

8 – ###### Error

Example

In the below image, dates and times are written in the cells. But, as column width is not enough, ##### is being displayed.

To resolve the error, we need to increase the column width as per requirement using the “Column Width” command available in the “Format” menu in the “Cell Size” group under the “Home” tab, or we can double click on the right border of the column.

9 – Circular Reference Error

This type of error comes when we reference the same cell in which we are writing the function or formula.

The above image shows that we have a sum of 0 as we have referenced B4 in the B4 cell itself for calculation.

To resolve the error, we need to remove the reference for the B4 cell.

Function to Deal with Excel Errors

1 – ISERROR Function

This function is used to check whether there would be an error after applying the function or not.

2 – AGGREGATE Function

This function ignores error values. Therefore, when we know that there can be an error in the source data, we need to use this function instead of the SUM, COUNT function, etc.

Example

Things to Remember

• To resolve any error in the formula, we can take online help also. First, we need to click on the “Insert Function” button under the “Formulas” tab and choose “Help on this function.”

• To avoid the #NAME? Error, we can choose the desired function from the drop-down list opened when we start typing any function in the cell, followed by the “=” sign. Next, we need to press the “Tab” button on the keyboard to select a function.

Recommended Articles

This article is a guide to Errors in Excel. Here, we discuss the top types of errors in Excel and functions to deal with them with the help of examples. You can learn more about Excel from the following articles: –

Источник

What is IFERROR Function in Excel?

The IFERROR function in Excel checks a formula (or a cell) for errors and returns a specified value in place of the error. This returned value can be a text message, an empty string, a logical value, a number, etc. The errors handled by the function include “#N/A,” “#DIV/0!,” “#NAME?,” and so on.

For example, cells A1, A2, and A3 contain the numbers 24, 35, and 78 respectively. We perform the following tasks in the given sequence:

1. To find the minimum number among the listed ones, we enter the formula “=MN(A1:A3)” in cell A4. It returns the “#NAME?” error because the correct function is MIN.
2. To return a custom message, we enter the formula “=IFERROR(MN(A1:A3),”incorrect function name”)” in cell A4. It returns the text “incorrect function name” (without the double quotation marks).

In this way, the IFERROR excel function replaces the error message (#NAME?) with a customized text string (incorrect function name).

In Excel, errors are displayed on account of multiple reasons. The IFERROR function detects and deals with these errors the way the user wants.

The purpose of using the IFERROR function is to return a customized and specified result in case a formula evaluates to an error. However, if no error is detected, the function returns the output of the formula.

The IFERROR function is categorized under the Logical functions of Excel.

Syntax

The syntax of the IFERROR excel function is shown in the following image:

The function accepts the following arguments:

• Value: This is the value to be checked for errors. It can be a cell reference, formula, value or expression.
• Value_if_error: This is the output returned in case an error is found. It can be a text string, blank cell, number, logical value, and so on.

Both the preceding arguments are mandatory.

How to Use IFERROR Excel?

Let us go through some examples to understand how the IFERROR function handles the Excel errorsErrors in excel are common and often occur at times of applying formulas. The list of nine most common excel errors are — #DIV/0, #N/A, #NAME?, #NULL!, #NUM!, #REF!, #VALUE!, #####, Circular Reference.read more. Every example covers one Excel error.

You can download this IFERROR Function Excel Template here – IFERROR Function Excel Template

#1–“#N/A” Error

The following table shows the names of some employees segregated in two columns titled “list of emp A” and “list of emp B.” Every name is written as “name” followed by a number. Some names are common to both the columns, while some are present in just one column.

We want to create an excel listA list can be created in Excel to define a list of items/values as predefined values. It may be created using the Data Validation tool so that users may select from a list rather than entering their own values.read more that separates the common names (present in both the columns) from those absent in the first column (list of emp A). Use the following functions:

• The VLOOKUPThe VLOOKUP excel function searches for a particular value and returns a corresponding match based on a unique identifier. A unique identifier is uniquely associated with all the records of the database. For instance, employee ID, student roll number, customer contact number, seller email address, etc., are unique identifiers.
  read more function of Excel must look up values in the first column (list of emp A).
• The IFERROR function of Excel must return the text string “name not in list A” for all “#N/A” errors.

The steps to apply the VLOOKUP and IFERROR functions (with reference to the current example) are listed as follows:

Step 1: Enter the following VLOOKUP formula in cell C2.

“=VLOOKUP(B2,$A:$A,1,0)”

Press the “Enter” key. Drag the formula downwards till the cell C18. The output of the VLOOKUP formula is shown in column C of the following image.

The VLOOKUP formula looks for a name of column B in column A. It returns the “#N/A” error (in column C) for the names that are absent in column A. Such names could not be found in column A as they are present only in column B.

Step 2: Replace the “#N/A” errors (shown in column C of the preceding image) with the text string “name not in list A.” For this, enter the following formula in cell C2.

“=IFERROR(VLOOKUP(B2,$A:$A,1,0),”Name not in list A”)”

Press the “Enter” key. Drag the IFERROR formula till cell C18.

For the ease of understanding, we have displayed the formulas of column C in the succeeding image. Some cells of column C are shown in green. These are the ones that had returned the “#N/A” error in the preceding step (step 1).

The formula “VLOOKUP(B2,$A:$A,1,0)” becomes the first argument and the string “name not in list A” becomes the second argument of the IFERROR function.

The IFERROR function checks the first argument for an error. If the VLOOKUP formula evaluates to an error, the second argument of the IFERROR function is returned. It has already been stated that the VLOOKUP formula evaluates to an error if the lookup value is not found in column A.

Step 3: The output of the IFERROR formula appears in column C, as shown in the succeeding image.

The IFERROR function returns the name if the VLOOKUP formula does not evaluate to an error. However, if the VLOOKUP formula does evaluate to an error, the IFERROR function returns the string “name not in list A.”

In this way, all the “#N/A” errors have been replaced by the text string “name not in list A.” This string implies that the particular name is not in list A (column A).

Hence, “name 20,” “name 35,” “name 21,” “name 31,” and “name 32” are present in column B but not in column A. The names common to both the columns (shown without color) have been separated (in column C) from those absent in column A (shown in green).

#2–“#DIV/0!” Error

The following table shows some amounts (in $) in the first column titled “amount.” We want to distribute every amount equally among the corresponding number of people mentioned in the second column named “to divide amongst.”

Use the following formulas or functions:

• The division formula must divide the amounts among the stated number of people.
• The IFERROR function must return the text string “no of person < 1” for all “#DIV/0!” errors.

The steps to apply the division formula and the IFERROR function are listed as follows:

Step 1: Enter the following division formula in cell C2.

“=amount/number of people” or “A2/B2”

Press the “Enter” key. Drag the formula downwards till cell C6. The output of the division formula is shown in column C of the following image.

Cell C4 shows the “#DIV/0!” error because the number of people (in cell B4), i.e., the denominator is zero.

Note: In Excel, any number divided by zero returns the “#DIV/0!” error.

Step 2: To replace the “#DIV/0!” error with the text string “no of person < 1,” enter the following formula in cell C2.

“=IFERROR((A2/B2),”No of Person < 1″)”

Press the “Enter” key. Drag the formula till cell C6. The output appears in column C, as shown in the following image.

In cases where the argument “A2/B2” does not evaluate to an error, the IFERROR formula returns the amount (in column C). Wherever the first argument (A2/B2) evaluates to an error, the text string “no of person < 1” is returned. This text string (in cell C4) implies that the number of persons among which $6,000 is to be divided is less than 1.

Hence, the amounts listed in column A have been divided among the number of people stated in column B. The amount received by each person is stated in column C.

#3–“#NAME?” Error

The following list shows some numbers to be added. Use the following functions:

• The SUM function in ExcelThe SUM function in excel adds the numerical values in a range of cells. Being categorized under the Math and Trigonometry function, it is entered by typing “=SUM” followed by the values to be summed. The values supplied to the function can be numbers, cell references or ranges.read more must sum the given numbers.
• The IFERROR function of Excel must return the text string “typed wrong formula” for all “#NAME?” errors.

The steps to apply the SUM and the IFERROR function are listed as follows:

Step 1: Enter the following formula in cell C2.

“=SU(A2:A9)”

The same is shown in the succeeding image.

Press the “Enter” key. The “#NAME?” error appears in cell C2. This is because we have mistakenly entered the function name as “SU” instead of “SUM.”

Step 2: To replace the “#NAME?” error with the text string “typed wrong formula,” enter the following formula in cell C2.

“=IFERROR(SU(A2:A9),”Typed Wrong Formula”)”

Press the “Enter” key. The formula is shown in the following image.

Step 3: The output appears in cell C2 of the following image. Hence, the IFERROR function has returned the text string “typed wrong formula” in cell C2. This string implies that the name of the function (SUM) has been typed incorrectly.

The given text string is returned because there is an error in the first argument [SU(A2:A9)] of the IFERROR function. Had we entered the correct function name (SUM), the output of the IFERROR formula (in cell C2) would have been the sum of the listed numbers, i.e., 180.

#4–“#NULL!” Error

The following list shows three numbers in the range A2:A4. We want to sum the numbers using the following formulas or functions:

• The arithmetic operator “plus” (+) must be used to add the numbers in cells A2, A3, and A4.
• The IFERROR function must return the total of the listed numbers.

The steps to use the plus sign (+) and the IFERROR function are listed as follows:

Step 1: Enter the following formula in cell A5.

“=A2+A3 A4”

Press the “Enter” key. The “#NULL!” error appears in cell A5, as shown in the following image. This error appears because we have forgotten to enter the relevant arithmetic operator before the reference A4. Rather, we have mistakenly entered a space before A4.

Step 2: To replace the “#NULL!” error with the total of the listed numbers in column A, enter the following formula in cell A5.

“=IFERROR((A2+A3 A4),(SUM(A2:A4)))”

Press the “Enter” key.

The first argument, “A2+A3 A4,” is checked for an error. The second argument, “SUM(A2:A4),” is the “value_if_error.” This implies that if the first argument evaluates to an error, the function returns the output of the second argument “SUM(A2:A4).”

Hence, the IFERROR formula returns the sum 600 in cell A5, as shown in the following image.

#5–“#NUM!” Error

The following list shows some numbers. We want to find the square roots of these numbers. Use the following functions:

• The SQRT function in Excel must calculate the square roots of the given numbers.
• The IFERROR function must return the text string “a negative number” for all “#NUM!” errors.

The steps to apply the SQRT FunctionThe Square Root function is an arithmetic function built into Excel that is used to determine the square root of a given number. To use this function, type the term =SQRT and hit the tab key, which will bring up the SQRT function. Moreover, this function accepts a single argument.read more and the IFERROR functions are listed as follows:

Step 1: Enter the following SQRT formula in cell B2.

“=SQRT(A2)”

Press the “Enter” key. Drag the formula downwards till cell B8. The output of the SQRT function is shown in column B of the following image.

The SQRT function helps calculate the square root of a number. However, the square root of a negative number does not exist. So, the SQRT function returns “#NUM!” errors for such numbers.

Step 2: To replace the “#NUM!” errors with the text string “a negative number,” enter the following formula in cell B2.

“=IFERROR(SQRT(A2),”A Negative Number”)”

Press the “Enter” key. Drag the formula till cell B8. The output of the formula is shown in column B of the following image.

The IFERROR function returns the result of the SQRT formula for all positive numbers. For the negative numbers, the IFERROR function returns the text “a negative number.” This text string notifies the user that the number whose square root needs to be found is negative.

Hence, the square roots of the listed numbers have been calculated and the resulting “#NUM!” errors have been replaced with a custom message (a negative number).

#6–“#REF!” Error

The following image shows two numbers in cells A2 and A3. These numbers have been divided with the help of the formula (=A2/A3) entered in cell C2. We want to delete row 3. Use the following techniques and functions:

• The row 3 must be deleted by right-clicking its header and choosing “delete.”
• The IFERROR function of Excel must return the text string “reference deleted” for the “#REF!” errors.

The steps to delete row 3 and apply the IFERROR function are listed as follows:

Step 1: Select row 3 by clicking the header (3) appearing on the leftmost side of the Excel sheet. Right-click the selection and choose “delete” from the context menu.

The row 3 is deleted and the “#REF!” error appears in cell C2, as shown in the following image.

The cell A3 was a part of the formula entered in cell C2. Since Excel is unable to locate the value (or cell reference) of the denominator, it returns the “#REF!” error in cell C2.

Step 2: To replace the “#REF!” error with the string “reference deleted,” enter the following formula in cell C2.

“=IFERROR((A2/#REF!),”Reference Deleted”)”

Press the “Enter” key. The output of the IFERROR formula appears in cell C2 of the following image.

The IFERROR function checks whether the first argument (A2/#REF!) evaluates to an error or not. Since it does return an error, the function returns the second argument (reference deleted) as the output.

The text string “reference deleted” implies that the cell referenceCell reference in excel is referring the other cells to a cell to use its values or properties. For instance, if we have data in cell A2 and want to use that in cell A1, use =A2 in cell A1, and this will copy the A2 value in A1.read more entered in the division formula has been deleted. This text string is the argument “value_if_error.”

Hence, row 3 has been deleted and the resulting “#REF!” error has been replaced by the string “reference deleted.”

#7–“#VALUE!” Error

The following image shows two values in cells A2 and A3. We want to add these values. Use the following formulas or functions:

• The arithmetic operator plus (+) must sum up the given values.
• The IFERROR function must return the text string “text can’t add to number” for the “#VALUE!” errors.

The steps to use the plus symbol (+) and the IFERROR function are listed as follows:

Step 1: Enter the following formula in cell A5.

“=A2+A3”

Press the “Enter” key. The “#VALUE!” error appears in cell A5. This is because cell A2 contains a number while A3 contains a text string. The addition of a numeric and text value has resulted in an error. The same is shown in the following image.

Step 2: To replace the “#VALUE!” error with the text string “text can’t add to number,” enter the following formula in cell A5.

“=IFERROR((A2+A3),”Text Can’t Add to Number”)”

Press the “Enter” key. The output of the IFERROR formula is shown in cell A5 of the following image.

The IFERROR function checks the first argument (A2+A3) for an error. Since this argument does evaluate to an error, the function returns the second argument (text can’t add to number). The text string “text can’t add to number” implies that a text value cannot be added to a numeric value.

Had there been a number in place of the string “bag,” the IFERROR function would have returned the sum of the two numbers.

Hence, since the given values could not be added, the resulting “#VALUE!” error has been replaced by a custom message (text can’t add to number).

Likewise, the IFERROR function can be used for managing errors in Excel. Moreover, the output to be returned (in case of an error) can be customized as per the requirements of the user.

Frequently Asked Questions

Recommended Articles

This has been a guide to IFERROR Excel function. We discuss how to handle excel errors (#DIV/0, #N/A, #NAME?, #NULL!, #NUM!, #REF!, #VALUE!,) with examples. You may also look at these useful functions of Excel –

• IFERROR with VLOOKUP in ExcelIFERROR is an error-handling function and Vlookup is a referencing function. They’re combined and used so that when Vlookup encounters an error while finding or matching the data, the formula must know what to do. Vlookup function is nested in the iferror function.read more
• VBA IFERRORThe IFERROR function in Excel is used to determine what to do when an error occurs before performing any function.read more
• VLOOKUP Errors
• ISERROR in ExcelISERROR is a logical function that determines whether or not the cells being referred to have an error. If an error is found, it returns TRUE; if no errors are found, it returns FALSE.read more