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Eighth Grade (Grade 8) Statistics and Probability Concepts Questions

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Grade 8 Scatter Plots CCSS: 8.SP.A.2
What is the slope of the line of best fit?
Scatter Plot 3
  1. -1
  2. 24
  3. 1
  4. -24
Grade 8 Scatter Plots CCSS: 8.SP.A.1
The scatter plot shows the monthly heating bill cost for the Herrera family compared to the average temperature per month. Which statement best describes the trend for the scatter plot?
Scatter Plot 3
  1. The lower the average monthly temperature, the lower the monthly heating bill.
  2. The lower the average monthly temperature, the higher the monthly heating bill.
  3. There is a low correlation between the average monthly temperature and the monthly heating bill.
  4. There is no correlation between the average monthly temperature and the monthly heating bill.
Grade 8 Range, Median, Mean, and Mode
A group of 15 students sold raffle tickets. The median number of tickets sold by a single student was 87.

Which conclusion does this support?
  1. The group sold a total of 1,275 tickets.
  2. The group sold a total of 1,305 tickets.
  3. 7 students sold more than 87 tickets.
  4. 5 students sold 87 tickets.
Grade 8 Scatter Plots CCSS: 8.SP.A.1
Which of the following best describes the points in this scatterplot?
Scatter Plot 3
  1. Increasing linear
  2. Decreasing linear
  3. Constant linear
  4. None of these
Grade 8 Scatter Plots CCSS: 8.SP.A.1
The scatter plot shows what type of correlation?
Scatter Plot 2
  1. low positive correlation
  2. low negative correlation
  3. high positive correlation
  4. high negative correlation
  5. no correlation
Grade 8 Line Graphs
The slope of a distance-time graph correlates to
  1. acceleration.
  2. time.
  3. distance.
  4. velocity.
Grade 8 Scatter Plots CCSS: 8.SP.A.1
The graph of this data would most resemble which of the following types of graphs?
x - 1, 1, 2, 3, 4, 6, 6
y - 10, 9, 8, 7, 6, 5, 4
  1. Positive linear
  2. Negative linear
  3. Constant linear
  4. None of the above
Grade 8 Scatter Plots CCSS: 8.SP.A.1
The scatter plot shows what type of correlation?
Scatter Plot 1
  1. low positive correlation
  2. low negative correlation
  3. high positive correlation
  4. high negative correlation
  5. no correlation
Grade 8 Scatter Plots CCSS: 8.SP.A.1
The scatter plot shows what type of correlation?
Scatter Plot 3
  1. low positive correlation
  2. low negative correlation
  3. high positive correlation
  4. high negative correlation
  5. no correlation
Grade 8 Scatter Plots CCSS: 8.SP.A.1
The scatter plot shows what type of correlation?
Scatter Plot 4
  1. low positive correlation
  2. low negative correlation
  3. high positive correlation
  4. high negative correlation
  5. no correlation
Grade 8 Scatter Plots CCSS: 8.SP.A.1
Which type of association is being represented by the information below?
x - 2, 1, 6, 6, 8, 9, 7
y - 1, 3, 4, 7, 7, 9, 8
  1. constant association
  2. positive linear association
  3. negative linear association
  4. no association
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