Question

question 4 (5 points) 6. janine is analyzing spending habits of students in her high school. she finds a mean monthly discretionary expense of $70 spent on having meals out with friends. the standard deviation of a distribution is 5. what is the variance? the variance is ____ blank 1:

Explanation:

Step1: Recall variance - standard - deviation relationship

The formula for the relationship between variance ($\sigma^{2}$) and standard - deviation ($\sigma$) is $\sigma^{2}=\sigma\times\sigma$.

Step2: Substitute the given standard - deviation value

Given that $\sigma = 5$. Then $\sigma^{2}=5\times5$.

Answer:

25