Why, in the absence of any other evidence, can't you use data from an observational study to establish a causal link between two measurement variables?
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Q1: Suppose a correlation is found to be
Q2: Give an example where the explanatory variable
Q3: Name three (of the seven) reasons two
Q4: Which of the following can get in
Q5: Which of the following statements is true?
A)Legitimate
Q7: Give an example where the response variable
Q8: When is it appropriate to draw a
Q9: Which of the following could describe an
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