Statistics

The mean of a data set is 23 and 12.6. The z-score is -1.30. What is the standard deviation?

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  1. It would help if you proofread your questions before you posted them.

    I am guessing that the second term is a specific score.

    Z = (score-mean)/SD

    or SD = (score-mean)/Z

    Insert the values and solve for SD.

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