Question

Organise the following marks ion 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.

Answer 1

(i) Highest number is 9

(ii) Lowest number is 1

(iii) Range of the given data = Highest number – Lowest number = 9 – 1 = 8

(iv) Arithmetic Mean =