Unit 3 Assessment Review

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.HSF-LE.A.1B

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

• Positive

• Negative

• Random

• Strong

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.HSF-LE.A.1B

Given this regression information in desmos, you can describe the correlation as ...

• strong positive

• weak positive

• strong negative

• weak negative

Tags

CCSS.HSS.ID.B.5

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

Tags

CCSS.HSF.LE.B.5

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.HSF.LE.B.5

Given this regression information in Desmos, describe the type of correlation.

• Strong positive

• Weak positive

• Strong negative

• Weak negative

Tags

CCSS.HSS.ID.B.5

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

• y = 55.5x + 3.28

• y = 55.5x - 3.28

• y = 3.28x + 55.5

• y = -3.28x + 55.5

Tags

CCSS.8.EE.C.8C

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

• 0.43

• 0.6557

• -0.6557

• -3.28