Two sample t-test is used to check whether the means of two groups are significantly different from each other. For example, if you want to see if mean weight of males and females have statistically significant difference between them.

Independent T-test assumes that the two samples have equal variances. Welch's t-test is used if you have unequal variances.

*Either enter raw data or summary information to calculate two sample t-test. You can directly paste data from MS Excel.*

Enter Raw Data

Enter Summary Data

Result

Assumptions of Two Sample t-test

- Scores are normally distributed within each of the two groups
- Each score is sampled independently and randomly.
- Data must be continuous

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