Question

Does daily cardio exercise make subjects perform better on tests of intelligence? A study was conducted in which the daily habits of 45 college students were documented, focusing on the number of hours spent on exercise in a week. After a week, the subjects were given a computer-based intelligence test on which they receive a score on a 0 to 100 point scale. Their scores were compared with how many hours they spent exercising that week.
Select all that apply.
Choose at least one answer.
1 This is best described as an observational study.
2 The response variable is the score on the computer-based intelligence test.
3 The explanatory variable is the number of hours exercised during the week.
4 The response variable is the number of hours exercised during the week.
5 The explanatory variable is the score on the computer-based intelligence test.
6 This study is best described as an experiment.

Answer 1

Answer:

Those options that apply include:

This is best described as an observational study.

The response variable is the score on the computer-based intelligence test.

and finally,

The explanatory variable is the number of hours exercised during the week.

Explanation:

This is an observational study because the researcher does not have control over the variable.

The response variable is otherwise known as the Dependent Variable for the study.

The explanatory variable is also known as the independent variable.