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31 October, 01:32

If a z-score is zero, which of the following must be true? Explain your reasoning.

A. The mean is zero.

B. The corresponding x-value is zero.

C. The corresponding x-value is equal to the mean.

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Answers (1)
  1. 31 October, 03:47
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    The correct answer is (C)

    Explanation:

    To find the z-score the most important factors are the standard deviations, the mean and the variance. Likewise, if the corresponding x-value is equal to the mean and mean is zero, then the z-score will be zero because mean and z-score are always equal. Overall, z-score is used to measure the statistical relationship between groups based on the standard deviation from the mean.
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Home » Business » If a z-score is zero, which of the following must be true? Explain your reasoning. A. The mean is zero. B. The corresponding x-value is zero. C. The corresponding x-value is equal to the mean.
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