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ECON 1
Question | Answer |
---|---|
Market | A group of buyers and sellers of a particular good or service |
Buyers as a group | Determine the demand for the product |
Sellers as a group | Determine the supply of the product |
Competitive Market characteristics | - Many buyers and many sellers - Each have tiny impact on market price |
Perfectly Competitive Market characteristics | - All goods are exactly the same(commodities) - So many buyers and sellers that no one can impact the market price - called “price takers” |
Quantity demanded | Amount of a good that buyers are willing and able to purchase |
Law of Demand | - When the price of a good rises, the quantity demanded of the good falls - When the price falls, the quantity demanded rises - assuming “All else equal” |
Demand Schedule | A table that shows the relationship between the price of a good and the quantity demanded |
Demand Curve | A graph that shows the relationship between the price of a good and the quantity demanded |
Market Demand | Sum of all individual demands for a good - sum of the individual demand curves horizontally |
How to find Market Price | Add individual demands(quantity demands)together |
“Other things” | Things outside of the price that may impact the demand |
Changes in the “other things” causes | The demand curve to shift |
Shift to the right means | quantity demanded will be higher |
Shifts to the left means | Quantity Demanded will be lower |
Demand Curve Shifters | - Number of buyers - Income - Prices of related goods (substitutes&complements) - Tastes - Expectations |
Demand Curve Sliders only impact | The quantity demanded |
Normal Goods | Luxury watches Size of home gas |
An increase in income leads to an increase in demand for (all things equal) | Normal Goods |
Inferior Goods | Spam Ramen noodles used cars |
An increase in income leads to a decrease in demand for (all things equal) | Inferior goods |
Substitutes | Chicken sandwiches and Hamburgers Coke and Pepsi |
Two goods are substitutes if | An increase in the price of one leads to an increase in the demand for the other |
Complements | Eggs and Bacon Bagels and Cream Cheese |
Two goods are complements if | An increase in the price of one leads to a decrease in the demand for the other |
Tastes | Ad Campaigns Diet fads Influencers |
Anything that causes a shift in tastes towards a good will increase demand for that good and shift the D curve to the right | Tastes |
Predictions about the future that impact demand | Expectations |
Variables that move in the same direction | Positive Correlation |
Variables that move in opposite directions | Negative Correlation |
Slope Formula | y = y1 - y2 x1 - x2 |
Why is slope used | To show how much one variable responds to another |
Omitted Variable | Relevant variables that are left out causing a deceptive graph |
Reverse causality | Assuming a variable is causing something based off the date alone Ex: More police in a city with more crime ≠ Police cause more crime |
Equilibrium | Market Price has reached the level at which the quantity supply and quantity demand are even |
Equilibrium Price | Price of quantity supply and quantity demand are equal |
Equilibrium Quantity | Quantity at which the quantity supply and quantity demand intersect |
Surplus | Quantity Supply is greater than quantity demand |
Price change | Movement along supply and demand curves |
How to reach equilibrium during a Surplus | Prices dropped until equilibrium |
Shortage | Quantity Demand is greater than Quantity supply |
how to reach equilibrium during shortage | prices increase until equilibrium |
1st step to to analyzing changes in equilibrium | Decide whether or not the events shift the supply curve or the demand curve or both |
2nd step to to analyzing changes in equilibrium | Decide whether or not the shift is to the right or left |
3rd step to to analyzing changes in equilibrium | Use the supply and demand diagram to compare the initial equilibrium to the new one |