9. A population of $$ N=7 $$ scores has a mean of $$ \mu=13 $$. What is the value of $$ \Sigma X $$ for this population?

Question

UpStudy AI · Accepted Answer

To find the sum of all scores ($$ \Sigma X $$) in the population, you can use the formula for the mean:

$$
\text{Mean} (\mu) = \frac{\Sigma X}{N}
$$

Where:
- $$ \mu $$ is the mean,
- $$ \Sigma X $$ is the sum of all scores,
- $$ N $$ is the number of scores.

Given:
- $$ \mu = 13 $$
- $$ N = 7 $$

Rearranging the formula to solve for $$ \Sigma X $$:

$$
\Sigma X = \mu \times N = 13 \times 7 = 91
$$

**Answer:** The sum of all scores ($$ \Sigma X $$) is **91**.
The sum of all scores ($$ \Sigma X $$) is 91.

9. A population of \( N=7 \) scores has a mean of \( \mu=13 \). What is the value of \( \Sigma X \) for this population?