Two Variable Statistics Formative

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

The regression line on this scatter plot shows what type of correlation?

• Positive

• Negative

• Random

• Strong

When we use the regression line to find a value inside our data set, as shown in this graph, it is called...

• Convenience

• Correlation

• Interpolation

• Extrapolation

When the regression line is used to find a value outside of the data points, as shown in this graph, it is called...

• Convenience

• Correlation

• Interpolation

• Extrapolation

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, you can describe the correlation as ...

• strong positive

• weak positive

• strong negative

• weak negative

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

Determine the real-world meaning of the slope of this line of best fit.

• on average 697 people attended each football game

• 25 fewer people attended each football game

• 25 games per season

• attendance increased by 25 people each game

If we interpolate, what is the estimated population in 1960?

• 150 million

• 160 million

• 180 million

• 200 million