Question

Dr. Story found that the children in two-parent homes had higher reading-test scores than those in one-parent homes. However, the children from two-parent homes had more siblings than those in one-parent homes. What is the confounding variable?

Answer 1

Answer:    

number of siblings        

Explanation:

Confounding variables, in statistics are variables that affect both the independent variable and dependent variable, causing a bogus association. It can not be characterized in terms of associations and correlations, as it a casual concept. Confounding variables can devastate an experiment and create pointless results.

The approach to reduce confounding variables is Restriction, Randomization, Matching, etc.