Paired Samples T-Test Calculator

Compare means of paired observations (before-after, matched pairs)

Before / Pre-test Scores (comma-separated):

After / Post-test Scores (comma-separated):

Alternative Hypothesis:

The paired t-test compares means from the same group at two different times or under two conditions.

Formula: t = d̄ / (sd / √n)

Uses: Before-after studies, matched-pair designs, repeated measures.

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This page is maintained as an educational calculator reference.

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Formula Source: Standard Mathematical References

by Various

ðŸ”„Last reviewed: May 2026

âœ“Formula checks are based on standard references and internal QA review.