The mean of a dataset if given by the sum of the elements divided by the number of elements:
[tex]M = \dfrac{2+6+7+9+9+9}{6} = \dfrac{42}{6}=7[/tex]
B. 7
The mean (also known as the average) is found by adding all of the numbers in the set together, then dividing the result by how many numbers are in the set.
First, add the numbers together. [tex]2+6+7+9+9+9=42[/tex]
Finally, divide that by the amount of numbers in the set. [tex]\frac{42}{6}=7[/tex]
