Understanding 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 strong positive correlation indicate?

Back

A strong positive correlation indicates that as one variable increases, the other variable also increases significantly.

Front

What does a strong negative correlation indicate?

Back

A strong negative correlation indicates that as one variable increases, the other variable decreases significantly.

Front

What is a weak positive correlation?

Back

A weak positive correlation indicates that there is a slight increase in one variable as the other variable increases, but the relationship is not strong.

Front

What is a weak negative correlation?

Back

A weak negative correlation indicates that there is a slight decrease in one variable as the other variable increases, but the relationship is not strong.

Front

What is no correlation?

Back

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

Front

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

Back

A positive relationship in a scatter plot is identified when the data points trend upwards from left to right.

Front

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

Back

A negative relationship in a scatter plot is identified when the data points trend downwards from left to right.

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.

Front

What is an example of a positive correlation?

Back

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