Question

The mean of 12 numbers is 7.If 2 is added to each of the numbers, what will be the new mean?​

Answer 1

Step-by-step explanation:

The mean of 12 numbers is 12

\begin{gathered} \\ \frac{sum}{12} = 7\end{gathered}

12

sum

=7

Now add 2 to each number, so the sum will increase by 24

\begin{gathered} \\ \frac{sum + 24}{12} = \: new \: mean\\ \\ \\ \\ 7 + 2 = 9 = new \: mean\end{gathered}

12

sum+24

=newmean

7+2=9=newmean