posted by cindy on .
An experimenter wants to find out if drinking coffee makes people more alert. The amount of coffee a person drinks is the:
Im between A and B.
I think it's the hypothesis
It's one of the variables, but I'm not sure which.
An independent variable is the potential stimulus or cause, usually directly manipulated by the experimenter, so it could also be called a manipulative variable.
A dependent variable is the response or measure of results.
The hypothesis is the statement about how you think the experiment will turn out. For example:
Ho: Coffee has no effect.
Ha: Coffee makes people more alert.
A correlation coefficient is a number, varying between -1 and +1, indicating the degree of relationship between two variables.
I hope this will help you make decisions on this question and others.