Unit 4 Review

What type of association is shown?

• strong positive linear association

• strong negative linear association

• weak negative linear association

• no association

What type of association is shown?

• negative linear association

• non-linear association

• positive linear association

Which trend line best fits the data?

• a

• b

• c

• d

A line of best fit goes through the points (15, 75) and (25, 90). What is the slope of the line?

• 1.5

• both a and b are true

• both a and b are false

The line of best fit for a scatter plot is represented by the equation y=-2.5x+15. What does -2.5 represent?

• The slope

• The y-intercept

• A random number

• The y value

The line of best fit of a scatterplot is represented by the equation y=-2.1x + 7. What does the 7 represent in this equation?

• The slope

• The y-intercept

• The only possible answer

• An x value

The frequency table shows the number of stores in two cities. What percent of stores in City B are restaurants?

• 66.7%

• 33.3%

• 30%

• 100%

A line of best fit runs through the points (2,13) and (6,-1). What is the y-intercept of the graph?

• -3.5

• 0

• 10

• 20

• Positive

• Negative

• None

• The more you miss school the higher your grade will be.

• The more days that you are absent the lower your grade will be.

• There is no correlation between days absent and your grade.