0580 P43 - Nov 2018 - Q5 - 14 marks
14310
A metal recycling factory records weekly mass x tonnes for 52 weeks:
| Mass | 100| 200 | 250 | 300 | |
|---|---|---|---|---|
| Frequency | 8 | 20 | 12 | 12 |
(a(i)) Estimate the mean. [4]
(a(ii)) Draw a histogram. [4]
Another factory records daily masses:
(b(i)) How many days? [1]
(b(ii)) Estimate the median. [1]
(b(iii)) Estimate upper quartile. [1]
(b(iv)) Estimate interquartile range. [1]
(b(v)) Estimate days when mass>20 tonnes. [2]
