Author Question: In order to establish a connection between an explanatory and response variable in an observational ... (Read 79 times)

Davideckstein7 · **on:** Jul 24, 2018

In order to establish a connection between an explanatory and response variable in an observational study, what is needed?
a. Statistical methods that examine the connection.
b. A comparison to determine if changes in the explanatory variable are related to changes in the response variable.
c. Either a) or b)
d. You can never establish a connection between an explanatory and a response variable without doing a randomized experiment.

Question 2

Name one disadvantage and one advantage of an observational study over an experiment.

jamesnevil303 · **Reply #1 on:** Jul 24, 2018

Answer to Question 1

C

Answer to Question 2

DISADVANTAGE THE RESEARCHERS OBSERVE, BUT CANNOT CONTROL, THE EXPLANATORY VARIABLES. ADVANTAGE THEY ARE MORE LIKELY TO MEASURE PARTICIPANTS IN THEIR NATURAL SETTING (AND DO NOT MANIPULATE THEIR ENVIRONMENT).