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3.a) Calculate the standard deviation for the age distribution presented below: Age: 20.5-30.5 30.5-40.5 40.5-50.5 50.5-60.5 60.5-70.5 70.5-80.5 80.5-90.5 Frequency: 3 14 23 12 8

3.a) Calculate the standard deviation for the age distribution presented below: Age: 20.5-30.5 30.5-40.5 40.5-50.5 50.5-60.5 60.5-70.5 70.5-80.5 80.5-90.5 Frequency: 3 14 23 12 8 4 Explain your results. b) Calculate CV and explain your result

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