Let µ be the average of the random variable x. Then the quantities (xi − µ) are the deviations of x from its average. Show that the average of these deviations is zero. Hint: Remember that the sum of all the pi must equal 1.

Let µ be the average of the random variable x. Then the quantities (xi − µ) are the deviations of x from its average. Show that the average of these deviations is zero. Hint: Remember that the sum of all the pi must equal 1.

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Question

Let µ be the average of the random variable x. Then the quantities (x_i − µ) are the deviations of x from its average. Show that the average of these deviations is zero. Hint: Remember that the sum of all the p_i must equal 1.

Expert Solution