# 2.   Organise the following marks in a class assessment, in a tabular form.   4, 6, 7, 5, 3, 5, 4, 5, 2, 6, 2, 5, 1, 9, 6, 5, 8, 4, 6, 7 (i) Which number is the highest? (ii) Which number is the lowest? (iii) What is the range of the data? (iv) Find the arithmetic mean.

 Numbers Frequency 1 1 2 2 3 1 4 3 5 5 6 4 7 2 8 1 9 1

(i)  is the highest number.

(ii)  is the lowest number

(iii) Range of the data = Highest number - Lowest number

(iv) Arithmetic mean =

Therefore, mean of the data is

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