This calculator is used to compare the means of two independent groups to determine if they are significantly different from one another. It allows you to enter the information for as many as 10 independent groups at time. The calculator will then perform the t-test for every possible combination of groups (it is assumed that the two independent groups have unequal variances).
This test assumes you have a large population.
How To Interpret The Results
For example, suppose you carried out a survey with 200 respondents and you are interested in whether there is a difference between the mean scores for males and females, at the 95% confidence level.
'YES' indicates that there is a significant difference between the two mean scores at the 95% confidence level, i.e. the mean score for males is significantly higher than the mean score for females.