Draw a histogram of the following distribution :
| Heights (in cm) | Number of students |
| 150-153 | 7 |
| 153-156 | 8 |
| 156-159 | 14 |
| 159-162 | 10 |
| 162-165 | 6 |
| 165-168 | 5 |
To draw the histogram, we have to plot the frequency, i.e., the number of students on the y-axis and class interval, i.e., heights on the x-axis. We can construct the histogram as follows: