Scatter Plot Trend Lines and Outliers

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

• strong positive association

• weak positive association

• strong negative association

• weak negative association

• nonlinear association

Which of the following best describes an outlier?

• Data bunched around a certain value or range

• A line that estimates the relationship between two variables on a scatter plot

• A value that is much larger or smaller than most other values

• The average value of a data set

Based on a line of best fit (trend line) for the graph, what would be the hours worked per week for 60 people?

• 25

• 60

• 10

• There is no line of best fit (trend line).

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

• the location of the greatest point in a set of data values

• the location of the least point in a set of data values

• where there are no data values

• where there is a collection of data values

Describe the association(s) shown in this scatter plot. Select all that apply.

• Positive

• Negative

• Strong

• Weak

• Linear

Describe the association(s) shown in this scatter plot. Select all that apply.

• Positive

• Negative

• Strong

• Weak

• Linear

Which of the following best describes a negative linear association?

• Variables have no relation to each other when plotted.

• As one variable increases, so does the other.

• A data set that includes both negative and positive numbers.

• As one variable increases, the other decreases.

What is the expected score of a player that is 70 inches tall?

If the four data points listed were added to the scatter plot, which point would be an outlier?

• (15, 16)

• (25, 10)

• (30, 32)

• (45, 44)

Typically, air temperature decreases through the night between midnight and 6:00 am. This is an example of what type of association?

• Positive linear association

• Negative linear association

• No association