Scatter Plots

Front

What is a scatter plot?

Back

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

Front

What does a positive linear association in a scatter plot indicate?

Back

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

Front

What does a negative linear association in a scatter plot indicate?

Back

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

Front

What is a nonlinear association in a scatter plot?

Back

A nonlinear association occurs when the relationship between the variables cannot be accurately represented by a straight line.

Front

What does it mean if a scatter plot shows no association?

Back

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

Front

How can you identify a linear relationship in a scatter plot?

Back

A linear relationship can be identified if the data points form a pattern that resembles a straight line.

Front

What is the difference between correlation and association in scatter plots?

Back

Correlation specifically measures the strength and direction of a linear relationship between two variables, while association refers to any relationship, linear or nonlinear.

Front

What does a scatter plot with a positive correlation look like?

Back

A scatter plot with a positive correlation shows data points that trend upwards from left to right.

Front

What does a scatter plot with a negative correlation look like?

Back

A scatter plot with a negative correlation shows data points that trend downwards from left to right.

Front

What is the purpose of using scatter plots?

Back

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