The graph shows the number of novels borrowed by visitors at the local library on a Friday.
- How many visitors visited the local library that Friday?
- What was the average number of novels borrowed by each visitor that Friday? Give your answer to the nearest whole number.
(a)
Total number of visitors
= 70 + 93 + 114 + 43 + 95
= 415
(b)
Total number of novels borrowed
= 1 x 70 + 2 x 93 + 3 x 114 + 4 x 43 + 5 x 95
= 70 + 186 + 342 + 172 + 475
= 1245
Average number of novels borrowed
= 1245 ÷ 415
= 3
≈ 3
Answer(s): (a) 415; (b) 3