Adam is measuring the heights in cm of his tomato plants.
| Height (cm) | Frequency |
|---|---|
| 140<h≤150140 < h \leq 150140<h≤150 | 5 |
| 150<h≤160150 < h \leq 160150<h≤160 | 8 |
| 160<h≤170160 < h \leq 170160<h≤170 | 12 |
| 170<h≤180170 < h \leq 180170<h≤180 | 15 |
| 180<h≤200180 < h \leq 200180<h≤200 | 10 |
Estimate the mean height. Give your answer correct to 1 decimal place.
Hence, estimate the total height of the tomato plants.
Explain why your answer to part (a) is an estimate.
111 exam-style questions on OCR GCSE Maths Averages from Frequency Tables. Each one has a worked solution and a mark scheme showing where the marks go.