0580 P43 - Nov 2024 - Q8 - 9 marks
11812
The speeds of 100 cars are grouped as follows.
| Speed v (km/h) | \(30<v\le40\) | \(40<v\le45\) | \(45<v\le50\) | \(50<v\le70\) |
|---|---|---|---|---|
| Frequency | 15 | 20 | 35 | 30 |
(a) Find the pie-chart angle for 45<v≤50. [2]
(b) Estimate the mean speed. [4]
(c) Complete the histogram. [3]
