Mohidul has writt

We need to find the average using any method of calculation.

For the data given, the average can be calculated using direct method as the data is small. Using direct method for the given answer will provide us easier and faster calculation.

Let’s create a table showing frequencies and f_ix_i.

So, we have

∑f_ix_i = 4340

∑f_i = 100

Using the direct method, we have the formula for arithmetic mean.

Using the above values, we get

⇒ Mean = 43.4

Thus, average is 43.4.