Examlex
Explain why the OLS estimator for the slope in the simple regression model is still unbiased, even if there is correlation of the error term across observations.
Perfect Substitutes
Goods for which consumers are willing to replace one for the other at a constant rate, without affecting their level of utility.
Substitution Effect
The change in consumption patterns due to a change in relative prices, leading consumers to substitute one product for another.
Income Effect
The effect of modifications in earnings for a person or the economy on how much of a good or service is sought after.
Income Tax
A tax levied by governments on individuals or entities based on their income or profits.
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