The question asks about the shape of the long-run Phillips Curve according to the natural rate hypothesis. This hypothesis is a core concept in macroeconomics, particularly related to the relationship between inflation and unemployment in the long run.
Correct Option: B) Vertical at the natural rate of unemployment. This is consistent with the natural rate hypothesis, which posits that in the long run, unemployment will always revert to its natural rate, irrespective of the inflation rate.
The question asks about Engel's Law, a fundamental principle in economics concerning consumer behavior and household expenditure patterns. Engel's Law describes how the proportion of income spent on food changes as income rises.
Correct Option: D) Decreases
The question asks to identify the economist/statistician after whom the Engel Curve is named. This is a direct knowledge-based question related to economic concepts and their originators.
Correct Option: B) Ernst Engel is the economist and statistician after whom the Engel Curve is named. He was a German statistician who, in 1857, published a study on household budgets, observing how the proportion of income spent on food decreases as income rises, a phenomenon now known as Engel's Law, and graphically represented by the Engel Curve.
The question asks about the variable typically measured on the horizontal (x) axis of an Engel Curve. An Engel Curve illustrates the relationship between a consumer's income and the quantity demanded of a particular good, assuming all other factors remain constant.
Correct Option: B) Income — An Engel Curve plots the quantity demanded of a good (on the y-axis) against the consumer's income (on the x-axis). This curve helps classify goods as normal (quantity demanded increases with income) or inferior (quantity demanded decreases with income).
The question asks to identify the correctly matched pair among economic concepts and their associated economists. This requires knowledge of fundamental economic theories and their originators.
Correct Option: C) Engel Curve — Ernst Engel
This pair is correctly matched. The Engel Curve, developed by Ernst Engel, shows the relationship between income and the consumption of goods. Specifically, Engel's Law states that as income increases, the proportion of income spent on food decreases, even if the absolute amount spent on food increases.
The question asks about the relationship hypothesized by the Kuznets Curve. We need to identify the economic variables that this curve links.
Correct Option: C) The Kuznets Curve hypothesizes an inverted U-shaped relationship between economic growth/development and income inequality. Initially, as a country develops economically, income inequality tends to increase. However, after a certain point of development, income inequality is expected to decrease. This forms the basis of the Kuznets Curve.