Question

If you were going to gather some statistics to create a scatter plot, draw a line of best fit, and interpret the slope and y-intercept in context, which of these would be a good statistical question to ask? Check all that apply.(2 points)
Responses

How tall are the students in your grade level at school?
How tall are the students in your grade level at school?

What percentage of families in Florida had a radio in 1930?
What percentage of families in Florida had a radio in 1930?

What kind of car does your family drive?
What kind of car does your family drive?

How is college student enrollment changing over the last century?
How is college student enrollment changing over the last century?

What is your favorite color?
What is your favorite color?

Was your height greater than 60 cm before your last birthday?
Was your height greater than 60 cm before your last birthday?

Answer 1

Select: "How is college student enrollment changing over the last century?"

Reason: that question gives two quantitative variables (year and enrollment) suitable for a scatter plot with a fitted line. The slope would tell you the change in enrollment per year (rate of increase or decrease), and the y‑intercept would be the model's predicted enrollment at year zero (an extrapolated starting value or baseline, depending on how you code the years).