Question

the sum of lower limit of median class and modal class is ​

Answer 1

Explanation:

So, the lower limit of the median class is 10. The highest frequency is 20, which lies in the interval 15–20. Therefore, the lower limit of modal class is 15. So, the required sum is 10 + 15 = 25.

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Class Frequency Cumulative Frequency

10–15 12 37

15–20 20 57

20–25 9 66