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Find the standard deviation for the survey responses

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Reference no: EM132857898

A marketing researcher asked 80 adults how many times they went grocery shopping in the last month. Find the standard deviation for the survey responses summarized in the table below where x is the number of grocery trips and f is the frequency of that response:

x 0 1 2 3 4 6 8 10 12 13 20
f 10 18 12 10 22 2 1 1 2 1 1

Reference no: EM132857898

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