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Why are z-scores used in Statistics? a. They standardize scores for a known mean and standard deviation, allowing comparison. b. A z-score is an

Why are z-scores used in Statistics? a. They standardize scores for a known mean and standard deviation, allowing comparison. b. A z-score is an outlier. c. They allow you to allocate letters for missing values. d. They standardize scores in order to convert them to values closer to the mean.

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