Comparing Two Groups

Does a new teaching method beat the old one? The two-sample t-test compares the means of two independent groups and gives a p-value for the null hypothesis "the true means are equal". To compare categories (for example, whether outcome depends on group) use a chi-square test on a table of counts.

Examplepython

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Quick check

What does the chi-square test compare?

Counts across categoriesTwo standard deviationsA mean with zero

Your turn: write the code

Compare the two groups with a two-sample t-test and print the p-value rounded to 4 decimals.

Finish the quick check (and any code exercise) to complete this lesson, or mark it done yourself.

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