Question

Question 121 pts

In a _____ relationship, values vary systematically (together) in some way.

correlational

confounded

causal

casual

Flag this Question

Question 131 pts

In correlational research, you _____.

manipulate one dependent variable and look for changes in a second

measure two or more dependent variables and look for relationships between them

manipulate only two independent variables

typically use two categorical variables

Flag this Question

Question 141 pts

Dr. Sabrina M. Gotrocks conducts a correlational study of a relationship. She finds that two variables are significantly related. Dr. Gotrocks can safely conclude that the two variables are _____.

causally related but the direction of the causality is not clear

related in some way, but no causal inference can be made

causally related

are from the same population

Flag this Question

Question 151 pts

Correlation research is generally useful _____.

in the early stages of research to identify variables that might be causally related

on the days you eat at Taco Bell

when you want to establish causal relationships but cannot manipulate the independent variables

when you lack the funds to conduct an experiment

Flag this Question

Question 161 pts

The main difference between correlational and experimental research is that, in experimental research you _____.

do not manipulate the independent variables

do not manipulate more than two independent variables

measure more than one independent variable

manipulate independent variables and look for changes in the dependent variable

Flag this Question

Question 171 pts

Dr. LeBron James-Gotrocks is interested in studying the effect of the number of bystanders present at an emergency and the number of subjects who help the victim. He varies the number of bystanders (1,3 or 5) and records how many subjects help under each condition. In this example, the number of bystanders is the _____ variable.

independent

extraneous

dependent

correlational Please answer all questions!

Answer 1

The answers are:

121) The answer is, correlational

In a correlational relationship values vary systematically together in some way. It means forming an association. The increase in one variable tends to be associated to the increase in the other or vice versa. Or the increase in one would lead to the decrease in the other variable.

131) The answer is, manipulate only two independent variables.

In correlational research the researcher manipulates only two independent variables. Here, the two independent variables are influenced by a third variable. For example, the shorter a person, the lesser the weight. Here, the height and weight are independent variables, whose relationship is being established through a correlational study.

141) The answer is, related in some way, but no causal inference can be made.

Correlation between two variables does not imply causation. However, a causal relationship between two variables must impy a correlation. This is because a correlation would not necessarily mean to show that the change in one variable is the cause of the change in the values of the other variable. Causation shows that one event is the result of the occurence of the other event.

151) The answer is, in the early stages of research to identify variables that might be causally related.

Correlation helps in measuring the strength and direction of linear relationships between two variables by quantifying them.

161) The answer is, manipulate independent variables and look for changes in the dependent variables.

171) The answer is, independent

The bystanders are independent variables. The subjects are dependent on it.