In the formula for finding the mean of grouped data, (\bar{x} = a + \left(\frac{\sum f_i d_i}{\sum f_i}\right) \times h), (d_i) is given by:
1 mark
🔍 View Detailed Solution & Schema →

Question

In the formula for finding the mean of grouped data, $\bar{x} = a + \left(\frac{\sum fi di}{\sum fi}\right) \times h$, $di$ is given by:

Accepted Answer

In the step-deviation method, $di = \frac{xi - a}{h}$, where $xi$ is the class mark, $a$ is the assumed mean, and $h$ is the class size. Therefore, option A is correct.

Statistics

❓ Sibling Questions in this Chapter