Question

The money earned (in rupees) by each of the 40 scouts in the Khari Kamai project is given below.
$\begin{array}{cccccccccc}5& 6& 10& 7& 8& 9& 6& 5& 10& 7\\ 8& 7& 6& 5& 10& 10& 9& 7& 8& 6\\ 5& 7& 9& 6& 10& 10& 10& 10& 8& 7\\ 6& 7& 8& 9& 6& 7& 8& 9& 10& 5\end{array}$
Make a frequency table for this data and find the mean.

Answer 1

$$\begin{gathered} \overline{\mathrm{X}}=\frac{\mathrm{Total}\left(x\times f\right)}{\mathrm{N}} \\ =\frac{306}{40}=7.65 \end{gathered}$$

Hence, the mean is Rs 7.65 .