Scatter Plot - Line of Best Fit

Is there anything wrong with the line of best fit?

• The line of best fit it perfect!

• There are too many data points BELOW the line.

• There are too many data points ABOVE the line.

• The line of best fit should be longer.

Which graph displays the best fitting line?

• A

• B

• C

• D

What is the equation of the line of best fit?

• y = 5x + 25

• y = x + 25

• y = 25x + 1

• y = 25x + 5

Using the trendline on the graph, if you are 24 years old, how many emails per day would you expect to send?

• about 25

• about 35

• about 12

• about 72

Which of the following lines represents the line of best fit for the scatter plot?

• A

• B

• C

• D

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

• Yes

• No

The scatter plot shows the relationship between the number of chapters and the total number of pages for several books.  Use the trend line to predict how many chapters would be in a book with 180 pages. 

• 12 chapters

• 15 chapters

• 18 chapters

• 21 chapters

Use the equation of the trend line y = 8.77x + 686 to predict what the hiker's elevation will be after 145 minutes. Round to the nearest whole number of feet.

The y-intercept of the line of best fit would be____.

Select all that describe the type of association shown in the scatter plot.

• postive

• negative

• linear

• strong

• weak