Suppose you gathered th you gathered the following information from students at a local high school:
• gpa (grade point average)
• average weekly hours spent working at a job
• average weekly hours spent doing homework
• average hours of sleep a night
• hourly wage
• height
• weight
• length of the left foot
• age of the oldest child in the student's immediate family
• number of children in the student's immediate family
• sex
• race
• age
for each question below, identify variables from the list above that fit the requirements, and explain why you selected them (you may use the same variable for more than one answer):

a. identify two variables that you think will show a positive linear association, and explain your reasoning
b. identify two variables you think will show a negative linear association, and explain your reasoning
c. identify two variables you think will not show an association in a scatterplot, and explain your reasoning