Exploring the Correlation Coefficient

What is the range of values that a correlation coefficient can take?

• -1 to 1

• -1 to 0

• 0 to 1

• 0 to 100

What does a positive correlation imply?

• As x increases, y decreases

• As x increases, y remains constant

• As x increases, y also increases

• As x decreases, y increases

What does a correlation coefficient of zero indicate?

• A strong positive correlation

• A strong negative correlation

• A weak positive correlation

• No correlation

In the example of high school GPA and college GPA, what type of correlation is observed?

• Negative correlation

• Positive correlation

• No correlation

• Inverse correlation

What is the relationship between playing video games and GPA in college?

• Positive correlation

• No correlation

• Negative correlation

• Inverse correlation

What does the scatter plot of shoe size and college GPA indicate?

• Inverse correlation

• No correlation

• Negative correlation

• Positive correlation

What does a correlation coefficient of -1 signify?

• Perfect positive correlation

• Perfect negative correlation

• No correlation

• Weak negative correlation

Which correlation coefficient value indicates a moderate relationship?

• 0.5

• 0.3

• 0.1

• 0.9

What does the sign of the correlation coefficient indicate?

• The strength of the relationship

• The direction of the relationship

• The type of variables

• The range of the data

Which of the following is considered a very strong correlation?

• 0.6

• 0.4

• 0.2

• 0.9