Good day!

Could you please give me your guidance in this:

"This quantitative investigation will use a predictive correlational design to assess the strength of the relationship between the criterion variable and the predictor variables. The predictor variables are a) age, b) gender, c) race and d) hours tutoring of incoming college students enrolled in Intermediate Algebra, and the criterion variable is the grade earned in Intermediate Algebra."

I would like to know if the predictor variables are okay or at least feasible.

Thanks!!