Question: A student collects data showing the speed of a car and its fuel efficiency. The data forms a curve that peaks and then declines. What is the best way to model this relationship?
A) Linear regression
B) Quadratic regression
C) Constant function
D) No relatrionship exists
Correct answer: B
Grade: 8 | Topic: Statistics and Probability | Difficulty: Easy | Standard: 8.SP.A.3