Front

What is correlation?

Back

Correlation is a statistical measure that describes the extent to which two variables change together. A positive correlation means that as one variable increases, the other also increases, while a negative correlation means that as one variable increases, the other decreases.

Tags

CCSS.HSS.ID.C.9

Front

What is causation?

Back

Causation indicates that one event is the result of the occurrence of another event. In other words, causation implies a cause-and-effect relationship between two variables.

Tags

CCSS.RI.4.3

CCSS.RI.5.3

CCSS.RI.6.3

CCSS.RI.7.3

CCSS.RI.8.3

Front

What does a correlation coefficient of 0 indicate?

Back

A correlation coefficient of 0 indicates no correlation between the two variables, meaning that changes in one variable do not predict changes in the other.

Tags

CCSS.HSS.ID.B.5

Front

What does a correlation coefficient of 1 indicate?

Back

A correlation coefficient of 1 indicates a perfect positive correlation, meaning that as one variable increases, the other variable increases in a perfectly linear manner.

Tags

CCSS.HSS.ID.B.5

Front

What does a correlation coefficient of -1 indicate?

Back

A correlation coefficient of -1 indicates a perfect negative correlation, meaning that as one variable increases, the other variable decreases in a perfectly linear manner.

Tags

CCSS.HSS.ID.B.5

Front

What does a correlation coefficient of 0.19 suggest?

Back

A correlation coefficient of 0.19 suggests a weak positive correlation between the two variables.

Tags

CCSS.HSS.ID.B.5

Front

What does a correlation coefficient of 0.92 suggest?

Back

A correlation coefficient of 0.92 suggests a strong positive correlation between the two variables.

Tags

CCSS.HSS.ID.B.5

Front

What is an example of correlation without causation?

Back

An example of correlation without causation is the increase in ice cream sales as the temperature rises. While both variables increase together, one does not cause the other.

Tags

CCSS.HSS.ID.C.9

Front

What is an example of causation?

Back

An example of causation is putting water in the freezer to make ice. The action of freezing causes the water to turn into ice.

Front

How can you visually assess correlation?

Back

You can visually assess correlation by using a scatterplot, where each point represents a pair of values. The pattern of the points can indicate the type of correlation.

Tags

CCSS.HSS.ID.B.5