U7D12 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, ranging from -1 to 1.

Front

What does a correlation coefficient of r = 1.00 indicate?

Back

A correlation coefficient of r = 1.00 indicates a perfect positive linear relationship between two variables.

Front

What does a correlation coefficient of r = -1.00 indicate?

Back

A correlation coefficient of r = -1.00 indicates a perfect negative linear relationship between two variables.

Front

What does a correlation coefficient of r = 0 indicate?

Back

A correlation coefficient of r = 0 indicates no linear relationship between the two variables.

Front

What does a positive correlation coefficient signify?

Back

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

Front

What does a negative correlation coefficient signify?

Back

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

Front

What is the range of values for the correlation coefficient?

Back

The range of values for the correlation coefficient is from -1 to 1.

Front

What does a correlation coefficient of r = 0.89 suggest about the relationship between two variables?

Back

A correlation coefficient of r = 0.89 suggests a strong positive correlation between the two variables.

Front

If the correlation coefficient is -0.76, what can be inferred about the relationship between the two variables?

Back

If the correlation coefficient is -0.76, it can be inferred that there is a strong negative correlation between the two variables.

Front

What does a correlation coefficient of r = 0.92 indicate about studying and grades?

Back

A correlation coefficient of r = 0.92 indicates a strong positive correlation between hours studied and grades.