GMAS Review Statistics (25-26)

Based on the equations above, which statements are true? Mark all that apply.

• A. Stan’s equation suggests that a person’s height is approximately 7.5 times his or her head length.

• B. Olivia’s equation suggests that a person’s height is approximately 2.2 times his or her head length.

• C. Olivia’s equation indicates that a person with a head length of 8 inches would likely be about 63.4 inches tall.

• D. Stan’s equation indicates that a person 69 inches tall would likely have a head length of about 9 inches.

• E. The y-intercept in Stan’s equation indicates that a person with a head length of 0 would likely be about 7.5 inches tall.

Tags

CCSS.HSF.LE.B.5

Which graph best models the line of best fit for the data in the scatter plot?

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Tags

CCSS.8.SP.A.2

Which scatter plot shows a linear association?

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CCSS.HSS.ID.B.5

Every day, the manager of a water park tracks ticket sales and the high temperature. The scatter plot shows a sample of the daily ticket sales for days with varying temperatures. Draw a best-fit line for the scatter plot. Which statements about the data in the scatter plot are reasonable? Mark all that apply.

• A. There is a positive association between temperature and ticket sales.

• B. There is a linear association between temperature and ticket sales.

• C. As temperature increases, ticket sales decrease.

• D. There is a negative association between temperature and ticket sales.

• E. As temperature increases, ticket sales increase.

Tags

CCSS.8.SP.A.2

Which reason best explains why Derek’s line is a better model for the data?

• A) Since point J is close to the other points, Derek’s line would also be close.

• B) Since Derek’s line has a positive slope, it can be used as the line of best fit.

• C) Since point K is a data point, Liza’s line can pass through it and still fit the data.

• D) Since point K is an outlier, Liza’s line would be far from most of the other data points.

Tags

CCSS.8.EE.B.5

The scatter plot shows the number of entrants in a marathon race from 2000 to 2006. How could the association between the year and number of entrants be described?

• There is a positive association.

• There is a negative association.

• The data have no outliers.

• There is no association.

Tags

CCSS.6.SP.B.5C

CCSS.HSS.ID.A.3

Catherine performed an experiment by rolling small steel balls of different masses down a ramp and recorded the distance that each ball rolled. Catherine wants to draw a line of best fit to represent the data. Through which two points should she not draw the line? Mark all that apply.

• A) F and L

• B) K and L

• C) H and L

• D) J and L

• E) J and K

Tags

CCSS.8.SP.A.2

How could the association between the week and number of fish in the lake be described?

• There is a negative association.

• There is a positive association.

• There is no association.

• There is a nonlinear association.

Tags

CCSS.6.SP.B.5C

CCSS.HSS.ID.A.3

Three friends join a running club. After every other training session, they time themselves for a 1-mile run. The scatter plot shows the times for those runs. Draw a best-fit line for the scatter plot. Which statements about the data in the scatter plot are reasonable? Mark all that apply.

• A. There is no clear pattern. A best-fit line is not useful.

• B. There is negative association between number of training sessions and time to run 1 mile.

• C. The data in the scatter plot suggests a linear association.

• D. As the number of training sessions increases, the running time decreases.

• E. As the number of training sessions continues to increase, the 1-mile times will eventually reach 0.

Tags

CCSS.HSF.LE.B.5

According to the meaning of the slope of the equation, for every increase in speed of 1 mph, by how many feet does the stopping distance increase?

• 1 foot

• 4.8 feet

• 29.7 feet

• -3.7 feet

Tags

CCSS.HSF.LE.B.5