Question: Calculate the range, the variance, and the standard deviation for the Katz et al. data on SAT performance after reading the passage. 66 75 72

Calculate the range, the variance, and the standard deviation for the Katz et al. data on SAT performance after reading the passage.

66 75 72 71 55 56 72 93 73 72 72 73 91 66 71 56 59

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