Dr. washington is interested in studying the relationship between test scores, coded from zero percent to 100 percent, and the number of hours studying for the test, in college students. in this example, number of hours studying for the test is a(n) variable.

independent quantitative.

Step-by-step explanation:

An indepentent variable in an investigation, is the variable that will be changed in order to know how its variation affects the dependent variable.

In this case, the dependent variable is the test scores since Dr Washington will study there is the numeber of hours of study affects the grade the students obtain.

Therefore, the hours of study are the independent variable.

It is also a quantitative variable since it can be counted.