Question: To standardize a random variable X means: O To scale its unit of measurement so to make it comparable to similarly scaled variables O To

To standardize a random variable X means: O To scale its unit of measurement so to make it comparable to similarly scaled variables O To transform it by computing the logarithm of X. so that marginal changes can be expressed in percentages O To subtract from X its mean and divide by its variance O) To transform it such that its mean equals 1 and its variance equals 0

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