Construct the cumulative frequency distribution of the following distribution:
Class $12.5-17.5$ $17.5-22.5$ $22.5-27.5$ $27.5-32.5$ $32.5-37.5$ Frequency $2$ $22$ $19$ $14$ $13$
| Class | $12.5-17.5$ | $17.5-22.5$ | $22.5-27.5$ | $27.5-32.5$ | $32.5-37.5$ |
| Frequency | $2$ | $22$ | $19$ | $14$ | $13$ |
(N/A) To construct the cumulative frequency distribution,we add the frequency of each class to the sum of the frequencies of all preceding classes.
| Class | Frequency | Cumulative frequency |
| $12.5-17.5$ | $2$ | $2$ |
| $17.5-22.5$ | $22$ | $2 + 22 = 24$ |
| $22.5-27.5$ | $19$ | $24 + 19 = 43$ |
| $27.5-32.5$ | $14$ | $43 + 14 = 57$ |
| $32.5-37.5$ | $13$ | $57 + 13 = 70$ |
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