Handling Data 3

3 marks · Easy

The marks out of 10 scored by 5 students in a quiz are:

5, 7, 8, 8, 10

For this data:

(a)

Write down the mean.

[1 mark]

(b)

Write down the range.

[1 mark]

(c)

Write down the mode.

[1 mark]

Work this out on paper, then compare with the answer and worked solution below. With a free account you can submit written answers for marking.

Show answer

(a) 7.6

(b) 10 - 5 = 5

Common mistakes: Missing that 8 appears twice for the mode

Show mark scheme and worked solution

Marking points

M1 (a) · 1 mark · Correct calculation of the mean: (5+7+8+8+10)/5 = 7.6

B1 (b) · 1 mark · Correct range: 10 - 5 = 5

B2 (c) · 1 mark · Mode is 8 (appears twice)

Worked solution

Mean: (5 + 7 + 8 + 8 + 10) / 5 = 38 / 5 = 7.6

Range: 10 - 5 = 5

Mode: 8 (it occurs most often)