Considering Correlation
For each of the pairs of variables listed below, indicate what you to expect in the way of an overall
direction of correlation (positive, negative, or no correlation) and what you expect the strength of
the correlation to be (weak, strong, or perfect). Then write a sentence or two justifying your
choices:
1. Height in centimeters and height in inches.
Direction: ________ Strength: _______
Justification:
2. Levels of income and amount of spending on consumer goods;
Direction: ________ Strength: _______
Justification:
3. The age of a car and its value;
Direction: ________ Strength: _______
Justification:
4. Two scores thrown on two dice simultaneously;
Direction: ________ Strength: _______
Justification:
5. Snowstorms and attendance at college classes;
Direction: ________ Strength: _______
Justification:
6. Ability to see in the dark and the amount of carrots eaten;
Direction: ________ Strength: _______
Justification:
7. Daily cigarette consumption and cardiovascular health;
Direction: ________ Strength: _______
Justification:
8. Heights and weights of elementary school children;
Direction: ________ Strength: _______
Justification:
9. Weekly consumption of calories in food and drink and body weight;
Direction: ________ Strength: _______
Justification:
10. Age and physical strength in senior citizens.
Direction: ________ Strength: _______
Justification: