# Manuals/calci/TTESTTWOSAMPLESEQUALVARIANCES

TTESTTWOSAMPLESEQUALVARIANCES (Array1,Array2,HypothesizedMeanDifference,Alpha,NewTableFlag)

• and are set of values.
• is the Hypothesized Mean Difference.
• is the significance level.
• is either 0 or 1.

## Description

• This function calculating the two Sample for equal variances determines whether two sample means are equal.
• We can use this test when both:
• 1.The two sample sizes are equal;
• 2.It can be assumed that the two distributions have the same variance.
• In , and are two arrays of sample values. is the Hypothesized Mean Difference .
• Suppose HypothesizedMeanDifference=0 which indicates that sample means are hypothesized to be equal.
• is the significance level which ranges from 0 to 1.
• is either 0 or 1.
• "1" is indicating the result will display in new worksheet.Suppose we are omitted the NewTableFlag value it will consider the value as "0".
• The t statistic of this function calculated by:



where

• Here and are unbiased estimators of the variances of two samples. is the grand standard deviation data 1 and data2 and n is the data points of two data set.
• This function will give the result as error when
  1.any one of the argument is non-numeric.
2.Alpha>1
3. and  are having different number of data points.