Question: Answer all questions with explanation 4 Given the following data on the ages of 75 persons in years. Calculate the first four central moments. Age

Answer all questions with explanation

4 Given the following data on the ages of 75 persons in years. Calculate the first four central moments. Age Number of persons 09.5-14.5 14.5-19.5 19.5-24.5 24.5-29.5 29.5-34.5 34.5-39.5 39.5-44.5 44.5-49.5 Total 75 5 Calculate the correlation coefficient from the following data on hourly sales (x) and expenses (y) of 7 stores: 70 66 68 71 69 65 67 1: 72 68 69 69 72 67 66 Explain your result

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