Question: Find the standard deviation for the grouped data below: interval frequency 5001-10,000 12 10,001-15,000 17 15,001-20,000 13 20,001-25,000 12 25,001-30,000 26

Find the standard deviation for the grouped data below:

interval frequency
5001-10,000 12
10,001-15,000 17
15,001-20,000 13
20,001-25,000 12
25,001-30,000 26

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