A nursery owner measures the heights in cm of young maple trees.
| Height (cm) | Frequency |
|---|---|
| 20<h≤3020 < h \leq 3020<h≤30 | 6 |
| 30<h≤4030 < h \leq 4030<h≤40 | 12 |
| 40<h≤5040 < h \leq 5040<h≤50 | 16 |
| 50<h≤6050 < h \leq 6050<h≤60 | 18 |
| 60<h≤8060 < h \leq 8060<h≤80 | 8 |
Use linear interpolation to estimate the median height.
Estimate the mean height.
Estimate the standard deviation.
32 exam-style questions on Edexcel AS Level Maths Measures of Location and Spread, covering 2.1 Measures of Central Tendency, 2.2 Other Measures of Location, 2.3 Measures of Spread, 2.4 Variance and Standard Deviation, and 2.5 Coding. Each one has a worked solution and a mark scheme showing where the marks go.