Associations in Data

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 140 pages. 

• 12 chapters

• 19 chapters

• 14 chapters

• 21 chapters

If one variable increases as the other variable increases, there is said to be a _________ __________.

• Positive association

• Negative association

• Boundary point

• Cluster

If one variable increases as the other variable decreases, there is said to be a __________ __________.

• Negative association

• Positive association

• Linear association

• Boundary line

If there is no apparent pattern in the scatterplot, then the variables have __ ___________.

• No association

• Linear association

• Strength

• Non-linear association

Strength is a description of how much scatter there is in the data away from the line of best fit. Above is an example of which kind of strength?

• Weak strength

• Moderate strength

• Strong strength

Strength is a description of how much scatter there is in the data away from the line of best fit. Above is an example of which kind of strength?

• Weak strength

• Moderate strength

• Strong strength

A _____ is a set of disconnected data

points plotted on a coordinate plane. It allows

us to investigate connections between two

variables.

• Segmented Bar Graph

• Scatter Plot

• Two Way Table

• Relative Frequency

The _____ of a category tells us

the fraction or percent of the data set that is

in this category.

• Relative Frequency

• Segmented Bar Graph

• Scatter Plot

• Two-way table

A _____provides a way to compare two categorical variables. It shows one of the variables across the top and the other down one side. Each entry in the table is the frequency or relative frequency of the category shown by the column and row headings.

• Two-way table

• Segmented Bar Graph

• Scatter plot

• Relative Frequency

A line that represents, in general, data on a scatterplot. The ________________ is used to make predictions for other data.

• Line of best fit

• Line

• Line of symmetry

• Line segment