Independent t-test - Explained Simply (Part 4)
how2stats
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Independent t-test - Explained Simply (Part 4) walks through calculating an independent t-test by hand using brain volume data from smokers and non-smokers, focusing on computing means, variances, and sample sizes to assess statistical significance.
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At least numerically, it looks like smokers have a smaller brain volume than nonsmokers: 4.29 versus 5.33.
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