Question

PLEASE HELP!!!

Here are the prices of five new skateboards, in dollars: 75, 82, 100, 120, 140.
The standard deviation is about $27.
If a sixth skateboard is added to the sample that has a price of $450, what
happens to the standard deviation?

Answer 1

C-the new standard deviation is greater the $27

Answer 2

standard deviation=143.527

C

Explanation:

75, 82, 100, 120, 140.

if we add 450

75, 82, 100, 120, 140,450

standard deviation=143.527

find the mean=sum /count=967/6=161.167

then find the √square difference between each sample and the mean, add up the differences²/6-1

find the square root of the differences=143.527