Scatter Plots

Vocabulary What does a cluster tell you about the data on a scatter plot?

• A cluster tells you the location of the greatest point in a set of data values.

• A cluster tells you the location of the least point in a set of data values.

• A cluster tells you where there are no values.

• A cluster tells you where there is a concentration of data values.

The scatterplot shows the amount of sleep that Aria got the night before a test and her test scores. What type of relationship do you see between amount of sleep and test scores?

• In general, Aria scores lower on a test when she sleeps more and scores higher on a test when she sleeps less.

• In general, Aria scores higher on a test no matter how much she sleeps.

• In general, Aria scores lower on a test no matter how much she sleeps.

• In general, Aria scores higher on a test when she sleeps more and scores lower on a test when she sleeps less

The scatter plot shows the amount of sleep Aria got the night before a test and her test scores. Which is the best prediction for Aria’s grade when she sleeps for 10 hours?

• 75

• 83

• 92

• 99

Choose the best description of the relationship between the data in the scatter plot.

• weak positive

• strong negative

• strong positive

• Nonlinear

Select all the observations that are true about the scatter plot.

• Most players are between 60 and 70 inches tall.

• Players scored between 40 and 80 points per game.

• There is an outlier at about (72, 24).

• There is a weak positive association between height and points scored.

What type of linear association does the graph show?

• Strong positive

• Weak positive

• Strong negative

• Weak negative

The table below shows the ages of employees under 30 at a company and their annual salaries.

age salary

22 - $30,500

24 - $37,000

23 -$35,000

25 -$38,500

22 - $32,000

26 - $43,000

24 - $34,000

• 
• 
• 
• 

The scatterplot shows the number of visitors at an art show in relation to admission price. What does point A on the scatterplot represent?

• When the ticket price was $120, a total of 15 people visited the art show.

• When the ticket price was $15, a total of 180 people visited the art show.

• When the ticket price was $180, a total of 15 people visited the art show.

• When the ticket price was $15, a total of 120 people visited the art show.

What is a scatter plot?

• A table of measurement data used to construct a graph

• A display of points that shows the relationship between two sets of data

• A graph that has several different lines scattered on a coordinate plane

• A graph that is nonlinear

Which point is the outlier on this scatter plot? What might the outlier represent?

• (0.07, 18) might represent a new born shark.

• (0.07, 18) might represent an unusually large shark.

• (105, 320) might represent an unusually large shark.

• (105, 320) might represent a new born shark.