Question

2
Find the arithmetic mean of the following frequency distribution
CI
25-30
30-35
35-40 40-4545-50
F
14
8
16
20
2
​

Answer 1

class mark will be 5 and multiply the class mark with frequency then add class mark and value which your multiply and then divide both the values to find the mean

Answer 2

Answer:

refer to the attachment....