Mean, median, standard deviation, probability, and hypothesis testing.
Find the mean of 4, 7, 9, 2, 8
Sum = 30, count = 5. Mean = 30 ÷ 5 = 6.
What is the probability of rolling a 6 on a fair die?
There is 1 favorable outcome out of 6 possible outcomes: P = 1/6 ≈ 16.7%.
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