Prob Stat Review

What is the probability of landing on the color blue on the spinner?

• 3/3

• 1/12

• 3/12 or 1/4

• 3/9 or 1/3

What is the probability of the spinner landing on red?

• 5/12

• 7/12

• 5/5

• 5/10 or 1/2

What result is least likely?

• Blue

• Red

• Yellow

• Purple

What was the day with the least amount of cars sold? 

• Monday

• Tuesday

• Wednesday

• Thursday

Which of the following correlation coefficients best correspond with the scatterplot?

• 1

• -0.7

• 0

• -0.1

What happens if you remove the outlier from the following dataset:

• the mean will decrease

• the mean will increase

• the mean will double

• the mean will remain the same

Which of the following charts is best to illustrate the relationship between 2 quantitative variables?

• segmented bar chart

• histogram

• scatterplot

• pie chart

Interpret the correlation of r = -0.9

• strong and positive

• strong and negative

• weak and positive

• weak and negative

The slope of a regression line describes the increase in the response variable when the explanatory variable increases by 1 unit.

• true

• false