What is a lurking variable? O A scary variable. A variable that scientists ignore because of ethical issues in the study. A variable that we aren't measuring or controlling, but may influence the outcome of a response variable, and possibly the explanatory variable. O A variable that we are controlling in an experiment so that it doesn't have an effect on our response variable. O A variable that may result in the placebo effect.
What is a lurking variable? O A scary variable. A variable that scientists ignore because of ethical issues in the study. A variable that we aren't measuring or controlling, but may influence the outcome of a response variable, and possibly the explanatory variable. O A variable that we are controlling in an experiment so that it doesn't have an effect on our response variable. O A variable that may result in the placebo effect.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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PLEASE ANSWER ALL OF THE QUESTION IN THE PICTURES, PLEASE!
Transcribed Image Text:What is a lurking variable?
O A scary variable.
A variable that scientists ignore because of ethical issues in the study.
A variable that we aren't measuring or controlling, but may influence the outcome of a
response variable, and possibly the explanatory variable.
A variable that we are controlling in an experiment so that it doesn't have an effect on our
response variable.
O A variable that may result in the placebo effect.
Transcribed Image Text:What is the key difference between an experiment and an observational study?
Only observational studies require randomization.
We can only perform observational studies on people.
Only experiments impose a treatment to the subjects.
Only experiments can have an explanatory and response variable.
There is no difference. Experiments and observational studies are two terms that mean the
same thing.
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