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Solve fast please Question 8 Calculate the variance of this frequency distribution: Boundaries Frequency 20.5 - 25.5 8 25.5 - 30.5 30.5 - 35.5 4

Solve fast please

Question 8 Calculate the variance of this frequency distribution: Boundaries Frequency 20.5 - 25.5 8 25.5 - 30.5 30.5 - 35.5 4 35.5 - 40.5 7 40.5 - 45.5 7 ( Roundup to two decimal digits)

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