A dummy variable is:
A. a variable with a low t-stat and high p-value.
B. an unbiased estimate of the true variable.
C. a placeholder for a variable to be gathered later.
D. a dichotomous variable that is used to indicate the presence or absence of a characteristic.
Answer: D
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Although artificial selection may seem slow and unreliable, ____________________ observed that after only a few generations, breeders produced many varieties of pigeons and minks
Fill in the blank(s) with correct word
Global air circulation patterns are produced by ____ differences in the amount of solar radiation reaching Earth
a. elevational b. latitudinal c. moisture d. rotational e. longitudinal
About twelve to twenty-four hours after the previous
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