Question
Construct histograms for following frequency distribution:
| Class Mark | 6 | 12 | 18 | 24 | 30 | 36 |
| Frequency | 8 | 12 | 15 | 18 | 25 | 7 |
✓
Answer
Steps :
a. Make the class intervals continuous by taking class mark as midpoints.
b. On the $x$-axis, take $1 \mathrm{~cm}$ as 5 units and plot class interval.
c. On the $y$-axis, take $1 \mathrm{~cm}$ as 5 units and plot frequency.
d. Draw rectangles of histogram as per given data.
a. Make the class intervals continuous by taking class mark as midpoints.
b. On the $x$-axis, take $1 \mathrm{~cm}$ as 5 units and plot class interval.
c. On the $y$-axis, take $1 \mathrm{~cm}$ as 5 units and plot frequency.
d. Draw rectangles of histogram as per given data.
| Class Interval | Frequency |
| 3-9 | 8 |
| 9-15 | 12 |
| 15-21 | 15 |
| 21-27 | 18 |
| 27-33 | 25 |
| 33-39 | 7 |
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