Interpreting Lines and Graphs

What type of association does this graph have?

• positive

• negative

• none

• all of the above

What is the general trend of this line graph?

• The more you mow, the less money you make.

• You make the same amount of money regardless of how long you mow.

• The more you mow, the more money you make.

• Mowing is dangerous.

What type of association does this graph have?

• positive 

• negative

• none

• all of the above

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

Which is the graph of y= -x + 2?

• A

• B

• C

• D

Which is the graph of y=-x+2?

• A

• B

• C

• D

As x increases, y decreases.

• no correlation

• negative correlation

• correlation coefficient

• positive correlation

As x increases, y increases

• correlation coefficient

• causation

• positive correlation

• negative correlation

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

Is this line an accurate line estimate of best fit for the data?

• Yes

• No