Question

Dr. Kid is studying the effects of sleep on a child's reading speed. She initially takes a measure of each child's reading speed. Next, she varies the amount of sleep different children get. Finally, she re-measures their reading speed. What is the independent variable in her study?

Answer 1

Sleep time.

Step-by-step explanation:

Independent variables are usually time or age. Usually the dependent variable is that variable that is being measure. In this example, the child's reading speed. The dependent variables is attached or "depends" on the amount of time a child needs to sleep.