U5 D12 Correlation Coefficient Classwork

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 strong positive correlation mean?

Back

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

Front

What does a strong negative correlation mean?

Back

A strong negative correlation means that as one variable increases, the other variable tends to decrease.

Front

How can you determine the strength of a correlation?

Back

The strength of a correlation can be determined by the absolute value of the correlation coefficient: closer to 1 or -1 indicates a stronger correlation.

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

If r = 0.89, what can be inferred about the relationship between the variables?

Back

If r = 0.89, it indicates a strong positive correlation between the variables.

Front

If r = -0.75, how would you describe the correlation?

Back

If r = -0.75, it indicates a strong negative correlation between the variables.