The following will not cause correlation between X and u in the simple regression model:
A) simultaneous causality.
B) omitted variables.
C) irrelevance of the regressor.
D) errors in variables.
Ans: D) errors in variables.
Economics
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In the figure above, when the price falls from $8 to $7, total revenue
A) increases from $120 to $210 so demand is elastic. B) decreases from $210 to $120 so demand is inelastic. C) increases from $120 to $210 so demand is inelastic. D) decreases from $210 to $120 so demand is elastic. E) increases from $120 to $210, but more information is needed to determine whether demand is elastic, inelastic, or unit elastic.
Economics
Why are cartels among firms usually kept secret?
What will be an ideal response?
Economics