Independent Groups T-Test for Means Calculator

This calculator is used to compare the means of two independent groups to determine if they are significantly different from one another.

Step 1

Select desired confidence level:

 %

Step 2

Group 1 Information
Enter the sample size, mean, and standard deviation of the first group.
Enter a positive number for sample size. Enter a positive number for frequency or a number from 1-100 for percent.



sample size
Group 1

mean
 

standard
deviation

Step 3

Group 2 Information
Enter the sample size, mean, and standard deviation of the second group.
Enter a positive number for sample size. Enter a positive number for frequency or a number from 1-100 for percent.



sample size
Group 2

mean
 

standard
deviation
RESULTS Click the Calculate button.      
  "T":      
  Degrees of Freedom:      
      2-Tail    
  Actual Confidence Level:   %    
  Are means significantly different at the selected confidence level?    
     Reset Form   Calculate Form  

What the results mean

When you interview two independent samples, there is some likelihood (confidence level) that the means obtained from the two groups are significantly different. If the t-value obtained from this test is greater than the t distribution value for a given confidence level, the observed means are significantly different.

 

More information

 
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