Review - Analyzing Two Variable Data

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

• 1

• -0.7

• 0

• -0.1

Tags

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.8

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

1000 , 2000 , 4000 , 7000 , 2000 , 6000 , 3 , 6000 , 9000 , 5000

• 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

Tags

CCSS.HSS.ID.B.6

The response variable is always the same as the dependent variable.

• true

• false

Analyzing between hair length and amount of money spent on hair products, the amount of money spent on hair products is the explanatory variable

• true

• false

Tags

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.8

CCSS.HSS.ID.C.9

Which of the following is NOT required to mention when describing the relationship between two quantitative variables.

• shape

• strength

• disposition

• outliers

Tags

CCSS.HSS.ID.A.3

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.9

What is the correlation coefficient of the following set of data:

(1,-3) (2,-6) (3,-9) (4,-12)

Tags

CCSS.HSS.ID.C.8

Interpret the correlation of r = -0.9

• strong and positive

• strong and negative

• weak and positive

• weak and negative

Tags

CCSS.HSS.ID.C.8

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

• true

• false

In the year 2020, there was a strong, positive correlation between wild fires and positive COVID tests. Therefore, wild fires caused COVID cases to increase

• true

• false

Tags

CCSS.HSS.ID.C.9