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 increases.

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 decreases.

Front

What does no association mean in a scatter plot?

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 nonlinear association?

Back

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

Front

What is correlation in the context of scatter plots?

Back

Correlation refers to the strength and direction of a relationship between two variables, which can be positive, negative, or none.

Front

What does it mean if a scatter plot shows a strong correlation?

Back

A strong correlation means that the data points are closely clustered around a line, indicating a consistent relationship between the variables.

Front

How can you identify a negative correlation in a scatter plot?

Back

A negative correlation can be identified when the data points slope downwards from left to right, indicating that as one variable increases, the other decreases.

Front

What is an example of a positive correlation?

Back

An example of a positive correlation is the relationship between the number of hours studied and test scores; as study time increases, test scores tend to increase.

Front

What is an example of a negative correlation?

Back

An example of a negative correlation is the relationship between outside temperature and the number of layers of clothing worn; as temperature increases, the number of layers typically decreases.