solve all 3 questions ( marks) QUESTION THREE 20 MARKS The table below shows the distribution of marks scored by Statistics 2nd year students in a statistics course Marks 20 29 30 39 40 49 50 59 60 69 70 79 80 89 90 99 Freq 4 7 8 9 11 15 5 Free Using an assumed mean method, calculate the mean and the standard deviation of Marks students' marks (9 marks) b) Calculate the coefficient of kurtosis and interpret your results (5 marks) c) Calculate the difference between the 7th decile and the 57th percentile (6 marks)

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solve all 3 questions ( marks) QUESTION THREE  20 MARKS  The table below shows the distribution of marks scored by Statistics 2nd year students in a statistics course  Marks 20 29 30 39 40 49 50 59 60 69 70 79 80 89 90 99 Freq  4 7 8 9 11 15 5 Free Using an assumed mean method, calculate the mean and the standard deviation of Marks students' marks (9 marks) b) Calculate the coefficient of kurtosis and interpret your results (5 marks) c) Calculate the difference between the 7th decile and the 57th percentile  (6 marks)

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Question: solve all 3 questions ( marks) QUESTION THREE [20 MARKS] The table below shows the distribution of marks scored by Statistics 2nd year students in

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