Which of these is a main difference between experimentsand observational studies?a) There is a response variable in an experiment, but notin an observational study.b) There is at least one explanatory variable in anexperiment, but not in an observational study. c) An experiment requires blocking, while an observa-tional study does not. d) An experiment can be used to establish a causalrelationship, but an observational study cannot.e) Observational studies require larger samples thanexperiments.
Which of these is a main difference between experimentsand observational studies?a) There is a response variable in an experiment, but notin an observational study.b) There is at least one explanatory variable in anexperiment, but not in an observational study. c) An experiment requires blocking, while an observa-tional study does not. d) An experiment can be used to establish a causalrelationship, but an observational study cannot.e) Observational studies require larger samples thanexperiments.
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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Question
Which of these is a main difference between experiments
and observational studies?
a) There is a response variable in an experiment, but not
in an observational study.
b) There is at least one explanatory variable in an
experiment, but not in an observational study.
and observational studies?
a) There is a response variable in an experiment, but not
in an observational study.
b) There is at least one explanatory variable in an
experiment, but not in an observational study.
c) An experiment requires blocking, while an observa-
tional study does not.
tional study does not.
d) An experiment can be used to establish a causal
relationship, but an observational study cannot.
e) Observational studies require larger samples than
experiments.
relationship, but an observational study cannot.
e) Observational studies require larger samples than
experiments.
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