Question

Find the arithmetic mean of data for the following set of numbers $23,45,34,43,12,2,17,9,10$.

• A. $21.66$
• B. $23.88$
• C. $12.44$
• D. $25.64$

Answer 1

The correct option is A $21.66$

We know, Mean is given by,

$\text{Mean}=\frac{\text{Sum of the elements}}{\text{Total number of elements}}$.

$=\frac{23+45+34+43+12+2+17+9+10}{9}$

$=\frac{195}{9}$ $=21.66$.