Scatter Plots

Which statement best describes the relationship between average traffic volume and average vehicle speed shown on the scatter plot?

• As traffic volume increases, vehicle speed increases.

• As traffic volume increases, vehicle speed decreases.

• As traffic volume increases, vehicle speed increases at first, then decreases.

• As traffic volume increases, vehicle speed decreases at first, then increases.

Which of the following statements about the graph is true?

• The graph shows a positive trend.

• The graph shows a negative trend.

• The graph shows a constant trend.

• The graph shows no trend.

Which graph best shows a positive correlation between the number of hours studied and the test scores?

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Based on the scatter plot, which statement is true?

• More ticket writers results in fewer tickets issued.

• There were 50 tickets issued every week.

• When there are 10 ticket writers, there will be 800 tickets issued.

• More ticket writers results in more tickets issued.

What kind of relationship between class study time and test scores is shown on the scatter plot?

• no correlation

• positive correlation

• negative correlation

• positive then negative correlation

What prediction can be made based on the information gathered?

• The water temperature remains the same as the heating time continues.

• The water temperature decreases as the heating time continues.

• A pattern cannot be determined between these measurements.

• The water temperature increases as the heating time continues.

Which statement accurately describes the information in the scatter plot?

• The information shows a positive correlation. The weight of a dinosaur tends to increase according to its length.

• The information shows a negative correlation. The weight of a dinosaur tends to decrease according to its length.

• The information shows no correlation. The weight and length vary according to the type of dinosaur.

• The information shows no correlation. The relationship between the weight and length of a dinosaur is uncertain.

Which statement best describes why Trevor's conclusion was incorrect?

• The largest class does not have the most absences.

• The smallest class does not have the least number of absences.

• The data show no relationship between class size and number of absences.

• The data show a negative relationship between class size and number of absences.

Which data will most likely show a negative correlation when graphed on a scatterplot?

• the outside temperature and the number of people wearing gloves

• the distance a student lives from school and the amount of time it takes to get to school

• the number of visitors at an amusement park and the length of the lines for the rides

• a student's height and grade point average

Which graph shows a line of best fit for the scatter plot?

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