Question

29. Calculate the ‘mean' for the frequency distribution table given below, by using direct
method.
Class internal Frequency
5 - 15 4
15 - 25 3
25 - 35 6
35 - 45 5
45 - 55 2
​

Answer 1

Answer:

From the table, we get

\Sigma{f}=80Σf=80

\Sigma{fx}=2830Σfx=2830

\text{Using the formula}Using the formula

\boxed{\textbf{Mean=$\bf\displaystyle\frac{\Sigma{fx}}{\Sigma{f}}$}}

Mean=

Σf

Σfx

\text{Mean=$\displaystyle\frac{2830}{80}$}Mean=

80

2830

\text{Mean=$\displaystyle\frac{283}{8}$}Mean=

8

283

\textbf{Mean=35.375}Mean=35.375

\therefore\textbf{The mean of the given distribution is 35.375}∴The mean of the given distribution is 35.375

Find more:

If the mean of the following distribution is 10 then find the value of p

Step-by-step explanation:

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