Scatter Plot and Trends

What type of correlation does this scatter plot show?

• positive

• negative

• no correlation

• nonlinear association

Which scatter plot shows a linear relationship between x and y?

• Graph A

• Graph B

• Graph C

• Graph D

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

Describe the correlation in the graph shown.

• Strong Negative

• Strong Positive

• Weak Negative

• Weak Positive

What type of association does this scatter plot represent?

• positive linear association

• negative association

• no association

• nonlinear association

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

Based on the graph, if Joe earned $400, how many hours did he work?

• 25 hours

• 35 hours

• 45 hours

• 15 hours

Based on the scatterplot, what is the best prediction of the resting heart rate of a person who exercises an average of 8 hours each week?

• 30 beats per minute

• 50 beats per minute

• 55 beats per minute

• 60 beats per minute

Scatter plots show trends in data.

• True

• False

What type of correlation is shown in this plot?

• Positive

• Negative

• No Correlation