Question: b) Treating the data as a sample. compute z-scores for cities on the median familyr income variable and explain whether it is necessary to flip

b) Treating the data as a sample. compute z-scores for cities on the median familyr income variable and explain whether it is necessary to flip the signs of z-scores on this variable. Then explain the statement "the z-score approach maintains interval-ratio level data by equalizing the mean and standard deviation." {6 points)

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