PreparED Study Materials
Videos
Analyzing Trade Policies' Impact on Producers, Consumers, and Trade
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
In this video, the concepts of tariffs and trade policies are explained, highlighting how tariffs affect the cost of imported goods and how trade policies control imports and exports. The video then examines four trade policy scenarios, emphasizing their impact on producers, consumers, and trade, ultimately identifying the correct answer as option c, which fulfills all the specified conditions.
Explaining Economic Logic of Purchasing-Power Parity
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
This video explains the theory of Purchasing Power Parity (PPP) in economics, emphasizing how it relies on the "law of one price" and illustrating how exchange rates should adjust to equalize purchasing power between nations in the long run. It also demonstrates how price disparities for products like iPhones can lead to currency exchange rate adjustments and eventually equalized prices.
Unraveling Economic Equations: From Price Level to Velocity of Money
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Discover how to calculate the price level and velocity of money using real-life data. Understand the relationship between money supply, GDP, and prices in the economy. Gain insights into the Federal Reserve's strategies for managing inflation and price stability.
Theory of Liquidity Preference: Interest Rate Adjustment
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
In this video, we explore the theory of liquidity preference, which focuses on how an economy's interest rate adjusts to balance supply and demand for money. We evaluate a multiple-choice question and discuss each option's alignment with various economic theories without revealing the correct answer.
Demystifying Assumptions: Economists' Key to Decoding Complex Markets
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Discover the pivotal role of assumptions in economics as we navigate the challenges of studying intricate market behaviors and human actions. Unveil how these simplifications foster comprehensive economic analyses and predictions.
Comparing Four-firm Ratio & HHI: Assessing Market Concentration & Powe
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Explore the differences between the Four-firm Concentration Ratio and the Herfindahl-Hirschman Index. Understand how they assess market concentration and dominance. Get insights into market power dynamics by comparing these two indices.





