Scatterplots and Trend

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

• A

• B

• C

• D

What type of association does this graph have?

• positive 

• negative

• none

• all of the above

What is a line of best fit used for?

• To make predictions

• To make the graph look pretty

• To connect the points

• To make it look like you know what you are doing

About how many male math teachers were there in 2006?

• 15

• 30

• 35

• 45

Which graph shows a line of best fit for the scatter plot?

• Graph A

• Graph B

• Graph C

• Graph D

What kind of correlation does this scatterplot show?

• negative correlation

• no correlation

• positive correlation

What type of correlation does this scatterplot represent?

• positive correlation

• no correlation

• negative correlation

Based on the scatterplot, about how much money would a group of 10 people be expected to spend on food and beverages at this restaurant?

• $135

• $115

• $105

• $150

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

• Yes

• No

The scatter plot below shows the number of books read by students in Mrs. Hall’s English class and their final grades. Which statement represents the best description about the line of best fit?

• The more books students read, the lower their English grade.

• The more books students read, the higher their English grade.

• The fewer books students read, the higher their English grade. 

• No relationship exists between the number of books students read and their English grades.