Find the mean of the following frequency distribution by assumed mean method.Class-interval 25-30 30-35 35-40 40-45 45-50 50-55 55-60 Frequency | 14 22 16 6 5 3 4

Find the mean of the following frequency distribution: 10th board

Q) Find the mean of the following frequency distribution:

Ans:

To calculate Mean value of the distribution, Let’s re-arrange the data with midpoint of each class, frequency, and multiply midpoint with frequency:

We know that, mean of grouped data is given by:

Mean of grouped data = $(\frac{\sum f_x}{\sum f})$

Therefore, Mean = $\frac{2580}{70}$ = 36.857

Hence, the mean value of the given distribution data is 36.86