Correlation Coefficient

Front

What is the correlation coefficient?

Back

The correlation coefficient is a statistical measure that describes the strength and direction of a relationship between two variables, typically denoted as 'r'.

Front

What does a positive correlation coefficient indicate?

Back

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

Front

What does a negative correlation coefficient indicate?

Back

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

Front

What is the range of values for the correlation coefficient?

Back

The correlation coefficient ranges from -1 to +1.

Front

What does an r value of 0 indicate?

Back

An r value of 0 indicates no correlation between the two variables.

Front

What does an r value of -0.89 suggest about the relationship between two variables?

Back

An r value of -0.89 suggests a strong negative correlation between the two variables.

Front

What does an r value of +0.5 suggest about the relationship between two variables?

Back

An r value of +0.5 suggests a moderate positive correlation between the two variables.

Front

What is the difference between correlation and causation?

Back

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

Front

What type of graph is commonly used to display the relationship between two variables?

Back

A scatter plot is commonly used to display the relationship between two variables.

Front

What does a scatter plot with no discernible pattern indicate?

Back

A scatter plot with no discernible pattern indicates no correlation or association between the variables.