Question

Find average for following individual data.

2

3

5

6

8

10

11

13

17

20

Answer 1

Calculating the average using direct method:

$$\begin{gathered} \mathrm{Average}\left(\overline{X}\right)=\frac{\Sigma X}{N} \\ \mathrm{or},\overline{X}=\frac{2+3+5+6+8+10+11+13+17+20}{10} \\ \mathrm{or},\overline{X}=\frac{95}{10} \\ \Rightarrow \overline{X}=9.5 \end{gathered}$$

Hence, the average of the above individual data is 9.5