Answer :

This is a grouped frequency distribution.

Notice the data in ‘number of companies’, is small and the class in ‘Number of shares’ have equal intervals. So, we can use direct method for ease of calculation and can rely on the answer for accuracy.

So, create the table again as we need to represent midpoints and frequency. Re-creating the table ensures ease of calculation.

The calculation is done on a table and we can easily extract data from it.

We have,

So now, we have

∑x_{i}f_{i} = 7000 and ∑f_{i} = 20

Using direct method,

Mean is given by

⇒ [Using values in the table]

⇒ Mean = 350

**Thus, mean is 350.**

Rate this question :

The number of shaGujarat Board Mathematics

The following disGujarat Board Mathematics

The mean of the fGujarat Board Mathematics

Select a proper oGujarat Board Mathematics

Find the mean of Gujarat Board Mathematics

Find the mean of Gujarat Board Mathematics

A survey conducteGujarat Board Mathematics

Marks obtained byGujarat Board Mathematics

Find the mean wagGujarat Board Mathematics

Find the mean forGujarat Board Mathematics