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system 10.11 LTS of 15/07/2026,
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FORESIGHT
TTest(A1, A2, Tails, Type)
A1. The first data range.
A2. The second data range.
Tails. Number of distribution tails. Available values:
1. The TTest function uses one-tailed distribution.
2. The TTest function uses two-tailed distribution.
Type. Type of executable t-test:
1. Paired. In this case A1 and A2 must contain the same number of data points.
2. Two-sample with equal variances (homoscedastic).
3. Two-sample with unequal variances (heteroscedastic).
The method returns the probability associated with the Student's criterion.
The function is used to determine whether two samples are likely to have come from the same two underlying populations that have the same mean.
See also:
Function Wizard | Statistical Functions