Positive, Negative, and No Correlation

What type of correlation does this graph have?

• positive

• negative

• none

• all of the above

What is the type of correlation?

• Negative 

• no association

• positive 

What type of correlation does this graph have?

• positive 

• negative

• none

• all of the above

The correlation is positive if the y variable generally increases as the x variable increases.

• True

• False

As x increases, y increases

• correlation coefficient

• causation

• positive correlation

• negative correlation

As shown in the table, a person's target heart rate during exercise changes as the person gets older. Use the graphing calculator to find the correlation coefficient (r).

• -0.999

• -0.664

• 0.998

• 1.503

What type of correlation does this scatter plot represent?

• positive linear association

• negative linear association

• no association

• nonlinear association

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

You are analyzing a scatter plot that has a negative correlation. What is true of the of the x and y values?

• As x increases, y decreases

• As x increases, y increases

• As x decreases, y decreases

If a scatterplot has no association then...

• ...it has no ordered pairs

• ...it has ordered pairs that have a negative pattern

• ...its ordered pairs have no predictable pattern

• ...if it makes a lion on a graph (roar!)