Statistics
Create and interpret cumulative frequency polygons
Interactive practice questions
Consider the data below.
| Height (cm) | Frequency |
|---|---|
| $155\le h<160$155≤h<160 | $10$10 |
| $160\le h<165$160≤h<165 | $20$20 |
| $165\le h<170$165≤h<170 | $35$35 |
| $170\le h<175$170≤h<175 | $20$20 |
| $175\le h<180$175≤h<180 | $15$15 |
a
Create a cumulative frequency polygon from this data.
b
Estimate the median from the graph to the nearest $5$5 cm.
c
Estimate the upper and lower quartiles based off the graph.
Write both on the same line separated by a comma and to the nearest $5$5 cm.
d
Estimate the interquartile range from the answers to part (c).
Give your answer to the nearest $5$5 cm.
Easy
4min
Consider the data below of times taken to walk to the nearest park.
Easy
3min
Consider the cumulative frequency polygon below.
Easy
1min
Consider the cumulative frequency polygon below.
Medium
1min
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