Scatter plots and Association

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 association in a scatter plot 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 scatter plot indicate?

Back

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

Front

What does 'no association' mean in the context of scatter plots?

Back

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

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 scatter plot.

Front

What is a nonlinear association?

Back

A nonlinear association is a relationship between two variables that cannot be accurately represented by a straight line.

Front

How can you identify a positive linear association in a scatter plot?

Back

A positive linear association is identified by points that trend upwards from left to right, forming a straight line.

Front

How can you identify a negative linear association in a scatter plot?

Back

A negative linear association is identified by points that trend downwards from left to right, forming a straight line.

Front

What is correlation in statistics?

Back

Correlation is a statistical measure that describes the extent to which two variables change together.

Front

What is the difference between correlation and causation?

Back

Correlation indicates a relationship between two variables, while causation implies that one variable directly affects the other.