## How to use the FTEST function

The FTEST function calculates the value from an F-test. The value shows if the variances from two data sets are not significantly different.

This function is outdated and is replaced with the F.TEST which was introduced in Excel 2010.

Formula in cell D12:

=FTEST(B3:B9,D3:D9)

### Excel Function Syntax

FTEST(*array1, array2*)

### Arguments

array1 |
Required. The first data set. |

array2 |
Required. The second data set. |

### Comments

The arguments must contain numbers or cell references to numbers.

Text, boolean and empty values are ignored.

The FTEST function returns

- #DIV/0! error value if the number of items in each data set don't match.
- #VALUE! error value if any argument is non-numeric.

The LINEST function calculates the F statistic whereas the FTEST function calculates the probability.

### Functions in 'Compatibility' category

The FTEST function function is one of many functions in the 'Compatibility' category.

Calculates the beta distribution, it represents outcomes in the form of probabilities.

Calculates the inverse of the beta distribution.

Calculates the individual term binomial distribution probability

Calculates the probability of the chi-squared distribution.

Calculates the inverse probability of the chi-squared distribution.

Calculates the test for independence, the value returned from the chi-squared statistical distribution and the correct degrees of freedom. Use this function to check if hypothesized results are valid.

Calculates the confidence interval for a population mean, using a normal distribution.

Calculates the covariance meaning the average of the products of deviations for each pair in two different datasets.

Calculates the minimum value for which the binomial distribution is equal to or greater than a given threshold value.

Calculates the F probability of the right-tailed distribution for two tests.

Rounds a number down, toward zero, to the nearest multiple of significance.

Calculates a value based on existing x and y values using linear regression. Use this function to predict linear trends.

Calculates the value from an F-test. The value shows if the variances from two data sets are not significantly different.

Calculates the gamma often used in queuing analysis (probability statistics).

Calculates the cumulative lognormal distribution of argument x, based on a normally distributed ln(x) with the arguments of mean and standard_dev.

Calculates the most frequent number in a cell range.

Calculates the percent rank of a given number compared to the whole data set.

Calculates the rank of a specific number compared to a list of numbers.

Calculates the standard deviation of a group of values.

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