The graph shows the number of colouring books borrowed by visitors at the local library on a Tuesday.
- How many visitors visited the local library that Tuesday?
- What was the average number of colouring books borrowed by each visitor that Tuesday? Give your answer to the nearest whole number.
(a)
Total number of visitors
= 132 + 64 + 88 + 92 + 99
= 475
(b)
Total number of colouring books borrowed
= 5 x 132 + 6 x 64 + 7 x 88 + 8 x 92 + 9 x 99
= 660 + 384 + 616 + 736 + 891
= 3287
Average number of colouring books borrowed
= 3287 ÷ 475
= 6.92
≈ 7
Answer(s): (a) 475; (b) 7