Question

Two groups of students were tested to compare their speed working math problems. Each group was given the same problems. One group with calculators,the other group without calculators. What is the independent variable,the dependent variable and constant variable?

Answer 1

The independent variable is the calculator

The dependent variable is the speed of solving the problem.

The constant variable is the same set of problem that was assigned to two groups of students.  

The dependent variable is the one that is being tested by experimentation. The dependent variable depends on the independent variable.  

The independent variable can b changed by the experimenter whereas the constant variable remains unchanged throughout the experiment.  

Answer 2

The independent variable is the variable being changed. In this case, the independent variable is the calculators. The dependent variable is essentially what you are looking for that depends on the independent variable. In this case it would be time. The constant variable or controlled variable are something that doesn't change and would skew the results. One may be the exact same problem for both groups. Try to come up with two more.