If it is shown that students' grades go down the more hours they spend watching TV, then grades and hours spent watching TV have a _______ correlation.

• A. positive
• B. negative
• C. mild
• D. parametric

Answer: (B)

Verified step by step guidance

1. Understand the concept of correlation: Correlation is a statistical measure that describes the extent to which two variables are related. It can be positive, negative, or zero.
2. Identify the relationship described: The problem states that as the number of hours spent watching TV increases, students' grades decrease.
3. Determine the type of correlation: A negative correlation occurs when one variable increases while the other decreases. In this case, more TV hours lead to lower grades.
4. Consider the options provided: The options are positive, negative, mild, and parametric. A positive correlation would mean both variables increase together, which is not the case here.
5. Conclude the type of correlation: Based on the relationship described, the correlation between TV hours and grades is negative, as an increase in TV hours is associated with a decrease in grades.