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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
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!

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 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.
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.
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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