2
QuizMultiple Choice
Choosing the Best Model
Question 2 • DRHS GA-Statistical Reasoning
The Bureau of Labor Statistics is an office within the US Department of Labor. Every three months the bureau releases a report containing jobs and salary data of US workers. One statistic reported is the median weekly salary for full-time workers. The scatterplot shows the growth of median weekly salary, starting in January 2010. An equation of the least-squares for the data in the scatterplot is , where 2010 represents year zero. The value of r for the scatterplot is 0.977.
Answer
A
A linear model is suitable because the value of r is close to 1.B
A linear model is suitable because the residual plot shows a curved pattern.C
A linear model is not suitable because the residual plot shows a clear pattern.D
A linear model is not suitable because there are more positive residuals than negative residuals.