Question

Find the mean of 3,11,7,2,5,9,9,2,10

Answer 1

Answer :-

$\sf Terms \: are \: :-$

$\implies{\sf{3, 11, 7, 2, 5, 9, 9, 2, 10}}$

$\boxed{\sf \: Mean \: = \: \dfrac{sum \: of \: terms}{total \: terms}}$

$\implies{\sf{Mean :-}}$

$\sf{\dfrac{3 + 11 + 7 + 2 + 5 + 9 + 9 + 2 + 10}{9}}$

$\implies{\sf{\dfrac{58}{9}}}$

$\implies \: \sf \: 6.45$

$\boxed{\sf{So,\ the\ mean\ is\ 6.45.}}$

Extra Info :-

To Find the mean, we have to divide the sum of observations by the number of observations.

Answer 2

Given: $3,11,7,2,5,9,9,2,10$

We have to find the mean of the above data.

• As we know that the mean of a data set is the sum of the terms divided by the total number of terms.
• The formula for mean is:
• $\text { Mean }=\frac{\text { Sum of terms }}{\text { Number of terms }}$

We are solving in the following way:

We have,

$3,11,7,2,5,9,9,2,10$

Here,

$\text { Sum of terms }=3+11+7+2+5+9+9+2+10=58\\\text { Number of terms }=9$

So, the mean will be:

$\begin{aligned}\text { Mean } &=\frac{\text { Sum of terms }}{\text { Number of terms }} \\\text { Mean } &=\frac{58}{9}\end{aligned}$

Hence, we get

$\begin{aligned}\text { Mean } &=\frac{58}{9}\end{aligned}$