Two Variable Statistics

What could be the relationship statement for this scatter plot?

• Ice cream sales depend on temperature.

• As the outside temperature increases, the ice cream sales increase.

• As the outside temperature decreases, the ice cream sales increase.

• There is no relationship between sales and temperature.

Tags

CCSS.HSS.ID.B.6

Which of the following only involves quantitative variables?

• age versus race

• number of siblings versus types of pets

• number of family members vs types of vacation

• years of experience versus amount of money saved

Tags

CCSS.HSS.ID.B.6

Given this regression line information in Desmos, what is the equation of the regression line?

• y = 0.9499x

• y = 3.2x + 28

• y = 0.95x + 0.90

• y = 28x + 3.2

Tags

CCSS.HSA.CED.A.2

CCSS.HSS.ID.C.7

Given this regression information in Desmos, what is the correlation coefficient?

• 0.9023

• 0.9499

• 3.20693

• 28.0081

Tags

CCSS.HSS.ID.C.8

The regression line equation for this date is y = 1.4x + 47. What does the y-intercept represent in this scenario?

• Students studied an average of 47 minutes

• Students scored an average of 47 points when they studied

• Students earned 1.4 more points when studying

• Students who studied 0 minutes, earned an average of 47 points.

Tags

CCSS.HSS.ID.C.7

The name for a graph of plotted points that shows a relationship between two sets of data

• Coordinate plane

• Scatter plot

• Function graph

• Correlation

Tags

CCSS.HSS.ID.B.6

What describes how strong and the type of relationship between two data sets?

• Compilation

• Correction

• Cooperation

• Correlation

Tags

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.8

CCSS.HSS.ID.C.9

Describe the type of correlation in this scatter plot.

• Positive

• Negative

• No correlation

• Very strong

Tags

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.8

A positive correlation between two variables means...

• that as one variable increases, the other variable also increases

• that as one variable increases, the other variable decreases

• that as one variable decreases, the other variable increases

• the two variables are happy

Tags

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.8

A negative correlation between two variables means...

• that as one variable increases, the other variable also increases

• that as one variable increases, the other variable decreases

• that as one variable decreases, the other variable also decreases

• the two variables are unhappy

Tags

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.8

CCSS.HSS.ID.C.9