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This page shows questions in the Math 8 Statistics and Probability public release module at MSDE. 8th Grade Math
"Math 8 Statistics and Probability"

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Expand All Official Practice Test

This is a multiple choice question that allows you to select several options.

The owner of a canoe-rental shop is comparing the average monthly rainfall, in inches, to the number of canoe rentals per month. The data are shown in the scatter plot.

1 2 3 4 5 6 50 100 150 200 250 300 350 400 450 500 0 x y Canoe Rentals Average Monthly Rainfall (inches) Number of Canoe Rentals per Month Image A scatter plot titled canoe rentals. The x axis is labeled average monthly rainfall in inches and ranges from 0 to 6 in increments of one half. The y axis is labeled number of canoe rentals per month and ranges from 0 to 500 in increments of 50. Twelve points are plotted, 11 of which are very close to a straight line drawn from one-fourth inch, 480 to five and one-half inches, 200. One point of the 12 is drawn at 2, 170, significantly below the line for the other points.

Which sentences correctly describe the data?

Select each correct answer.

  1. A.
    The data have a linear association.
  2. B.
    The data have a nonlinear association.
  3. C.
    The data have a positive association.
  4. D.
    The data have a negative association.
  5. E.
    The data have at least one outlier.
  6. F.
    The data do not have any outliers.

Copyright 2023, New Meridian Corporation. Reprinted with permission. All rights reserved. The printing, copying, redistribution, or retransmission of this content without express written permission is prohibited.

This is a question with 2 parts, including a multiple choice question that allows you to select only one option.

The average price of a movie ticket from 1960 to 1990 can be modeled by the equation y equals 0 point 1 2 x plus 0 point 48, where y represents the average price, in dollars, and x represents the number of years since 1960.

Part A

What does the slope of the graph of the equation y equals 0 point 1 2 x plus 0 point 48 represent?

  1. A.
    the average price of a movie ticket in 1960
  2. B.
    the average price of a movie ticket in 1990
  3. C.
    the increase in the average price of a movie ticket each year from 1960 to 1990
  4. D.
    the total increase in the average price of a movie ticket every 30 years

Part B

For which year does the equation y equals 0 point 1 2 x plus 0 point 48, predict the average price of a movie ticket to be $3.00?

  1. A.
    1979
  2. B.
    1981
  3. C.
    1983
  4. D.
    1985

Copyright 2023, New Meridian Corporation. Reprinted with permission. All rights reserved. The printing, copying, redistribution, or retransmission of this content without express written permission is prohibited.