drinking a little, but not a lot. Many observational studies show that people wh
ID: 3254065 • Letter: D
Question
drinking a little, but not a lot. Many observational studies show that people who drink a moderate amount of alcohol have less heart disease than people who drink no alcohol or who drink heavily. Moderate means one or two drinks a day for men and one drink a day for women. a what are the explanatory and response variable? b. Are the variable maintaining a healthy weig
ht, getting enough sleep, and exercising regularly explanatory variables, response variable, or lurking variable? explain your answer. c. Is the association between drinking and heart disease good reason to think that moderate drinking actually cause less heart disease? explain why or why not?
Explanation / Answer
A) An explanatory variable is a type of independent variable and it doesn't depend on other variables while the response variable is dependent one. Hence, the Alcohol here is the explanatory variable while the heart disease is the response variable.
B) The variables(maintaining a healthy weight, getting enough sleep, and exercising regularly) are lurking variables as we are not including them as variables in our analysis but they can affect the response variable.
C) No, the association between drinking and heart disease is not a good reason to think that moderate drinking actually cause less heart disease. This is because we also have lurking variables(maintaining a healthy weight, getting enough sleep, and exercising regularly) in picture. Hence a heart disease may be caused by any of the lurking variable too rather than the high or low frinking of alcohol.
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