Independent t-Test Calculator
Sample:
1
2
3
4
mean1-mean2
participants1
participants2
df
critical value
(2 tailed p<.05)
critical value
(1 tailed p<.05)
t-score
effect size
medium=.20 to .50
Enter values here--
Equation components
Formula
t = (m1 - m2) / sqrt( [((n1 - 1)v1 + (n2 - 1)v2)/n1 + n2 - 2][(n1 + n2)/(n1*n2)])
where
m = mean
v = variance
n = participants in each group
Copyright © 2006 Mark Henri