Handling Data 1

2 marks · Normal

Holly’s test scores for 6 science quizzes are: 8, 12, 17, 10, 13, 10.

Calculate the mean score.

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

11.67 (±0.01)

Also accept: 11.7; 11.66

Common mistakes: dividing by 5 instead of 6; adding incorrectly

Show mark scheme and worked solution

Marking points

M1 · 1 mark · Sum of all six scores found. (follow-through)

A1 · 1 mark · Mean = 70 / 6 = 11.67 (rounded to 2 d.p.). (follow-through)

Worked solution

Sum = 8 + 12 + 17 + 10 + 13 + 10 = 70.

Mean = 70 / 6 = 11.666... = 11.67 (2 d.p.).