1 of 8 0-day streak

Identify the explanatory and response variables

Question 1 of 8

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Investigation 1: A study examines whether event attendance (hundreds of people) explains variation in waste collected (kg)

Investigation 2: A study examines whether variation in practice points can be explained by practice time (min)

Investigation 3: A study examines whether variation in resale value (hundreds of dollars) can be explained by vehicle age (years)

(a)1 mark

How should the two variables be assigned for investigation 1?

event attendance is the explanatory variable; waste collected is the response variable

waste collected is the explanatory variable; event attendance is the response variable

(b)1 mark

How should the two variables be assigned for investigation 2?

practice points is the explanatory variable; practice time is the response variable

practice time is the explanatory variable; practice points is the response variable

How should the two variables be assigned for investigation 3?

resale value is the explanatory variable; vehicle age is the response variable

vehicle age is the explanatory variable; resale value is the response variable