Correlation Coefficients

Front

What does a strong positive correlation indicate about the relationship between two variables?

Back

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

Front

What is the range of values for a correlation coefficient (r)?

Back

The correlation coefficient (r) ranges from -1 to 1.

Front

What does an r value of -0.981 suggest about the relationship between two variables?

Back

An r value of -0.981 suggests a strong negative correlation, indicating that as one variable increases, the other variable tends to decrease.

Front

What does an r value of -0.1 indicate about the relationship between two variables?

Back

An r value of -0.1 indicates a very weak negative correlation, suggesting little to no linear relationship between the variables.

Front

What is the definition of a correlation coefficient?

Back

The correlation coefficient is a statistic that measures the strength and direction of a linear association between two quantitative variables.

Front

What does a strong negative correlation indicate about the relationship between two variables?

Back

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

Front

What is the interpretation of an r value of 0?

Back

An r value of 0 indicates no correlation, meaning there is no linear relationship between the two variables.

Front

How can scatter plots be used to determine the correlation between two variables?

Back

Scatter plots visually represent the relationship between two variables, allowing one to observe the direction and strength of the correlation.

Front

What is the difference between positive and negative correlation?

Back

Positive correlation means that both variables move in the same direction, while negative correlation means that one variable moves in the opposite direction of the other.

Front

What does a correlation coefficient of 1 indicate?

Back

A correlation coefficient of 1 indicates a perfect positive linear relationship between two variables.