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60The following frequency table summarizes the ages of 65 shoppers at the local grocery store

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60The following frequency table summarizes the ages of 65 shoppers at the local grocery store. Calculate the sample variance and standard deviation for this data set. (Hint: First calculate class mid-points and the Mean for the grouped data)Age Frequency18-28 1028-38 1638-48 1548-58 1058-68 868-78 6