Unit 8: Scatterplots and Associations

Front

What is a scatterplot?

Back

A scatterplot is a graph that shows the relationship between two quantitative variables by displaying data points on a two-dimensional grid.

Front

What does a positive association in a scatterplot indicate?

Back

A positive association indicates that as one variable increases, the other variable also tends to increase.

Front

What does a negative association in a scatterplot indicate?

Back

A negative association indicates that as one variable increases, the other variable tends to decrease.

Front

What does it mean if there is no association in a scatterplot?

Back

It means that there is no discernible relationship between the two variables; changes in one do not affect the other.

Front

How can you identify a negative relationship in a scatterplot?

Back

A negative relationship can be identified when the data points slope downwards from left to right.

Front

What is the purpose of using scatterplots?

Back

Scatterplots are used to visually represent the relationship between two variables and to identify trends, patterns, or correlations.

Front

What is a linear association?

Back

A linear association is a relationship between two variables that can be represented by a straight line on a scatterplot.

Front

What is a non-linear association?

Back

A non-linear association is a relationship between two variables that does not follow a straight line; it may curve or have a different pattern.

Front

What is the meaning of 'association' in the context of scatterplots?

Back

Association refers to the relationship or correlation between two variables as represented in a scatterplot.

Front

How do you interpret the slope of a line in a scatterplot?

Back

The slope indicates the direction and steepness of the relationship between the two variables; a positive slope means a positive association, while a negative slope indicates a negative association.