Statistics: z, t, F, Chi-square
There are 23 students in a class, 12 females, 11 males, average height for females is 5’3, average height for males is 5’6, is male significantly taller than females? t-test
A/B test, expect 50% proportion, data shows 95 events for A, 93 for B, is this expected 50%? Chi-square goodness-of-fit test
If a Yahoo email user is shown a choice of puppy colors, will each color be clicked with the same frequency? Chi-square goodness-of-fit test
Are users who click snow color puppy independent of regions where they live? Chi-square independence test
Are Yahoo email users prefer to clicking ads on certain days, such as weekends? Chi-square goodness-of-fit test
Is the Yahoo user bidding price the same for users in Seattle, Oregon, and California? F-test
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