Problem Set 10.2: Correlation: Relationship Direction • Criterion: Differentiate

Question

Problem Set 10.2: Correlation: Relationship Direction

• Criterion: Differentiate between positive, negative, and neutral relationships among variables.

• Instruction: For each of the following, answer this: Do you expect the relationships between the variables to be negative (-), positive (+), or zero (0):

a. Size of yard and size of landscaping bill.

b. Years of education and income level.

c. Hours of TV watched per week and physical fitness level.

d. Number of siblings and number of pets.

e. Hours spent studying and exam scores.

Explanation / Answer

a) As size of Yard increase the size of the landscaping bill increase , so it is positive correlation

b) As number of years for education increase the income level is also increase so it is positive correlation

c) As hourse of TV watched per week increase the physical fitness level decrease so it is negative correlation

d) Neutral relation

e) As Hours spent studying increase and exam scores is also increase so it is positive correlation

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