• Question 4(12 points) The marks obtained by a sample of 15 students are as follows 15 13 6 12 11 18 2 17 18 17 17 9 8 14 16 (i) What is the mean mark obtained by this tutorial group? (ii) What is the range of the mark obtained? (iii) What is the variance of the mark obtained?
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To find the mean, we add up all the marks and divide by the number of marks. Show more…
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