Question

The mean shoe size of the students in a math class is 7.5. Most of the shoe sizes fall within 1 standard deviation, or between a size 6 and a size 9.
What is the standard deviation of the shoe size data for the math class?


1.5

2.7

3.0

3.8

Answer 1

Answer:

1.5

Step-by-step explanation:

The mean is the Middle number.

1 standard deviation in both sides of 7.5 makes it between 6 and 9.

What is the "common difference" in 6 to 7.5 and from 7.5 to 9?

$7.5-6=1.5$

and

$9-7.5=1.5$

So, we would say the standard deviation is 1.5

Answer choice A is right.

Answer 2

Answer:

The Answer On Edge Is A.), Have Fun Dreamers!

Step-by-step explanation: