Which of the following variable is not a good predictor of a state's average pupil teacher ratio?

Question

Quizplus · Accepted Answer

All of the options listed (percentage of population in urban areas, spending per pupil, and median family incomes) can have a statistically significant effect on pupil-teacher ratios, indicating that none of them is a poor predictor on its own. Each factor can influence educational resources, distribution, and demands, thereby affecting pupil-teacher ratios.

Which of the Following Variable Is Not a Good Predictor