Question: Consider the following grouped sample data: Values Frequency 5 to under 10 15 10 to under 15 9 15 to under 20 21 20 to

Consider the following grouped sample data:

Values Frequency 5 to under 10 15 10 to under 15 9 15 to under 20 21 20 to under 25 24 25 to under 30 6

a. Calculate the approximate mean of these sample data.

b. Calculate the approximate standard deviation of these sample data.

AppendixLO1

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