Scatterplot and Data Display

What is a cluster?

• All of the points on the graph are spread out without a pattern.

• A group of points that lie close together.

• An area on the graph that contains no data.

• A data point that is set off from the other data points.

A scatterplot is...

• a graph of data that is a set of points.

• a graph of data that has bars instead of points

When dots are close in a line on a graph, they display a ______ correlation.

• Low

• No

• High

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

What type of association does this graph have?

• positive

• negative

• none

• all of the above

The following scatter plot shows Pam's training as she prepares to run a 6 mile race at the end of the month.  Which of the following would be a reasonable approximation for the length of time it would take for her to run 6 miles? 

• 50 min

• 80 min

• 45 min

• 60 min

What type of correlation does this graph have?

• Negative 

• no association

• positive 

What type of correlation does this graph have?

• positive

• negative

• none

• all of the above

What type of association does this graph show?

• Positive

• negative

• none

• all of the above

What type of relationship does this scatter plot show?

• Positive

• Negative

• No Relationship

• Constant