Question: Determine the mean deviation of the data set given in Table 10.1, which represents the marks obtained in a mathematics examination by a group of

Determine the mean deviation of the data set given in Table 10.1, which represents the marks obtained in a mathematics examination by a group of 20 students.

Population (students) X1 X2 X3 X4 X5 X6 X7 X8 X9 X10 Variable/Observation (% marks) 60 55 60 48 70 38 52 54

Population (students) X1 X2 X3 X4 X5 X6 X7 X8 X9 X10 Variable/Observation (% marks) 60 55 60 48 70 38 52 54 66 42 Population Variable/Observation (students) (% marks) X11 X12 X13 X14 X15 X16 X17 X18 X19 X20 Table 10.1 % marks in maths exam 72 52 36 52 67 66 70 38 50 36

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