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Mathematics, 22.01.2020 09:31 yuu59

The following table shows the probability of rolling the numbers 1 through 7 on a fair seven-sided die.

x 1 2 3 4 5 6 7
p(x) 1/7 1/7 1/7 1/7 1/7 1/7 1/7
what is the standard deviation of the random variable x, "the number that comes up on the die? "

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