5(i)
The given graph with a histogram represents the number of plants of different heights grown in a school campus. Study the graph carefully and answer the following questions :
(a) Make a frequency table with respect to the class boundaries and their corresponding frequencies.
(b) State the modal class.
(c) Identify and note down the mode of the distribution.
(d) Find the number of plants whose height range is between 80 cm to 90 cm.
Show SolutionHide Solution↓
(a) Frequency table :
| Height (class) | Number of plants |
|---|---|
| 30-40 | 4 |
| 40-50 | 2 |
| 50-60 | 8 |
| 60-70 | 12 |
| 70-80 | 6 |
| 80-90 | 3 |
| 90-100 | 4 |
(b) From graph,
The modal class is 60-70.
(c) From graph,
The mode = 64.
(d) From graph,
The number of plants whose height range is between 80 cm to 90 cm are 3.