Chapter 6 Data Displays and Analysis

For which scatter plot would the line of best fit be represented by the equation y = ½x + 2?

• Graph A

• Graph B

• Graph C

• Graph D

Which equation could describe the line of best fit for this graph?

• y = 5x + 236

• y = -5x + 236

• y = 1/5x + 236

• y = -1/5x + 236

Which graph shows the line of best fit?

• Graph A

• Graph B

• Graph C

• Graph D

Find the slope for the trend line using points (2,2) and (4,3)

• 2

• 1/2

• -2

The linear regression equation for the data is  y = 1.5x + 12.  Interpret the slope of the equation.

• The slope is (0, 1.5).  It means that a pizza with 0 toppings will cost $1.50.

• The slope is 1.5.  It means that it costs $1.50 per topping.

• There are 1.5 toppings.

• There are 1.5 pizzas.

In the scatter plot, does the image shows a "Line of Best Fit"?

• Yes

• No

Estimate the correlation coefficient for this scatterplot.

• r = -0.9

• r = 1

• r = 0.9

• r = -1

Which with is the line of best fit?

• Black

• Orange

• Red

• Blue

In the graph are there any gaps, clusters, or outliers?

• No, there are not any of them.

• Yes, there is an outlier.

• Yes, there is an outlier and a gap.

• yes, there is an outlier and cluster.

• Yes, there is an outlier, gap, and cluster.

How many female students were interviewed?

• 22

• 51

• 52

• 73

• 80