Always use Welch's t-test instead of Student's t-test

Q: What type of study is this?

This is a Literature Review study.

Daniël Lakens

doi:10.59350/rf5hd-4e846

January 26, 2015Open Access

Always use Welch's t-test instead of Student's t-test

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Key Points

Using Welch’s t-test reduces the risk of erroneous conclusions in psychological studies, improving data accuracy.
The research emphasizes that Welch’s test is more robust under conditions of unequal variances than Student’s t-test.
Statistical methods like Welch’s t-test should be standard practice among psychologists to enhance the validity of findings.
The findings prompt psychologists to reassess their data analysis strategies, favoring methods that minimize bias.

Implication

This paper advocates for using Welch’s t-test for more accurate results in psychology, highlighting potential pitfalls of Student’s t-test.

Abstract

See our paper on this topic: Delacre, M., Lakens, D., & Leys, C. (2017). Why Psychologists Should by Default Use Welch’s t -test Instead of Student’s t -test.

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Cite This Study

Daniël Lakens (2015) studied this question.

synapsesocial.com/papers/68c1e17054b1d3bfb60fe9f1 https://doi.org/10.59350/rf5hd-4e846

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Always use Welch's t-test instead of Student's t-test

Key Points

Implication

Abstract

Discussion

Cite This Study

Always use Welch's t-test instead of Student's t-test

Key Points

Implication

Abstract

Discussion

Cite This Study

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