Given:
The given values are 4, 8, 12, 13.
To find:
The mean for this list of numbers.
Solution:
We know that,
[tex]\text{Mean}=\dfrac{\text{sum of observations}}{\text{Number of observations}}[/tex]
The number of observations = 4. So,
[tex]\text{Mean}=\dfrac{4+8+12+13}{4}[/tex]
[tex]\text{Mean}=\dfrac{37}{4}[/tex]
[tex]\text{Mean}=9.25[/tex]
Therefore, the mean for the given list of numbers is 9.25.
