The difference between matching and randomization is that in the former case individuals are deliberately and consciously matched to control the differences among group members,whereas in the latter case we expect that the process of randomization would distribute the inequalities among the groups,based on the laws of normal distribution.
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Q1: When a cause-and-effect relationship between an independent
Q3: One way of controlling the contaminating or
Q4: A field experiment,as the name implies,is an
Q5: Main testing effects occur when the pre-test
Q6: Putting pressure on individuals to participate in
Q7: It is not possible to set up
Q8: What is true about Quasi-Experimental Designs?
A)Quasi-Experimental Designs
Q9: Manipulation of independent variables in order to
Q10: External validity refers to the confidence we
Q11: Mortality (the dropout of individuals from groups)is
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