Public Health Quiz #14: Pearson Correlation Coefficient

1. A study aims to determine the relationship between the number of hours medical students spend studying and their USMLE Step 1 scores. The Pearson correlation coefficient (r) is calculated to be 0.7. Which of the following is the most accurate interpretation of this finding? 

Question 1 of 5

2. In a study examining the relationship between body mass index (BMI) and fasting blood glucose levels, researchers calculate a Pearson correlation coefficient (r) of -0.4. Which of the following best describes this relationship? 

Question 2 of 5

3. Researchers are investigating the correlation between age and maximal oxygen uptake (VO2 max) in a sample of healthy adults. They calculate a Pearson correlation coefficient (r) of -0.85. Which of the following interpretations of this result is correct? 

Question 3 of 5

4. In a study designed to explore the relationship between caffeine consumption and reaction time, a Pearson correlation coefficient (r) of -0.1 is found. How should this correlation be interpreted? 

Question 4 of 5

5. A study investigates the potential relationship between the duration of daily physical activity and sleep quality. The Pearson correlation coefficient (r) between these two variables is found to be 0.55. What does this indicate about the relationship between daily physical activity and sleep quality? 

Question 5 of 5


 

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