## Thinking Mathematically (6th Edition)

$\overline{x} =6.260869565$
To solve for the mean of the given frequency distribution, perform the following steps: (1) Multiply the score and the corresponding frequency. (Refer to the $fx$ column in the attached image below.) (2) Add the products in step (1) to obtain $288$. (3) Add the frequencies to obtain $46$. (4) Divide the result in step (2) by the result in step (3) to obtain: $\overline{x} = \dfrac{288}{46}=6.260869565$