Statistical Tests of Significance
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Paired t test
Formula used and other details
Average difference between pairs (x̄)
Get from data
Required
Average of differences between paired observatins (After - Before)
Standard Deviation of differences(s)
Required
Standard Deviation of differences between paired observations in your study
Sample Size in the group
(N)
Required
One tailed or two tailed hypothesis
Expected average difference (μ)
Required
Expected difference between the paired values, according to the Null Hypothesis. Most of the times it is 0.
Significance level % (Alpha / type I error %)
%
Enter positive number between 0.01 to 50.00
Required
Commonly used values are 5%, 1% and 10%. If your significance level is 0.05, then enter 5
One sided or two sided
Enter either 1 or 2
Required
One tailed or two tailed hypothesis
Results