gg Flashcards
(126 cards)
- Concept of Opportunity Cost and how it is measured?
The cost of doing something is what we have to give up to do that
what does scarcity mean in economics?
here are limited amounts of goods and services, resources, time.
- Difference between Positive and Normative economics
-Normative Economics are based on subjective opinion and may not always be
verifiable
-Positive Economics refers to “objective statements” that are verifiable based on
theory or empirical evidences.
PPF
An economic model showing
possible combinations of outputs, given the full use of inputs and
technology
- What is the economic implication of the PPF?
PPF communicates the essence of Economic decision making in an
environment of “Scarcity” and the related ideas of Trade-off and
Opportunity Cost
- Opportunity Cost along the PPF
Opportunity Cost tells us “To increase the production of Laptop by 1 unit
how many units of cellphones need to sacrificed, if all the resources are
utilized efficiently”
Graphically, the slope of the PPF corresponds to the Opportunity Cost
W h y i s t h e D e m a n d C u r v e D o w n w a r d
s l o p i n g ?
Substitution effect: When the price of a good reduces it makes the
good relatively cheaper compared to its substitutes and urges
consumers to buy more of it
* Income effect: When the price of a good falls it implies the money that
you have gains “purchasing power” – you can buy more goods with
the same amount of money
Price effect = Substitution effect + Income effect
* Diminishing Marginal Utility: As people consume more of a good
during a fixed time, the satisfaction received from each additional unit
decreases
What happens to the Demand curve of a product when the price of the product changes?
[Movement along the Demand curve]
f the price changes (all other factors remaining unchanged), we
should move along the demand curve
When Price increases Move upward : Decrease in Quantity Demanded
When Price drop Move downward: Increase in Quantity Demanded
What happens to the Demand curve of a product when the non-price factors of the product
change? [Shift the Demand curve
Price remaining fixed, if any “Non-price” Demand factor changes,
then the Demand curve can shift
∆ (Change) in taste or preference
∆ in Consumer’s Income
oNormal good
oInferior good
∆ in the Price of Related goods
o∆ in the price of a substitute
o∆ in the price of a complement
∆ in the Number of Buyers
∆ in Expected future prices
Distinction between Change in ”Quantity Demanded” (Movement along the demand curve) and
”Change in Demand” (Shift in the Demand curve)
normal good
Definition: A good whose demand increases as individual’s income
increases. (Given price and other factors are unchanged)
* Increase in Income will cause a Rightward shift in the Demand curve
* Decrease in Income will cause a Leftward shift in the Demand curve
how is market demand obtained from Individual Demand?
The overall or total demand for a good,
service, or resource. It represents the summation of individual demand
curves, whether they represent individuals, communities, states, or
nations.
What is meant by Normal good and Inferior good?
normal good-A good whose demand increases as individual’s income
increases. (Given price and other factors are unchanged)
* Increase in Income will cause a Rightward shift in the Demand curve
* Decrease in Income will cause a Leftward shift in the Demand curve
inferior good-In economics, an inferior good is a good whose demand decreases when consumer income rises This is unlike the supply and demand behavior of normal goods, for which the opposite is observed. Inferior goods are often considered less desirable or lower quality than their alternatives
What is meant by Substitute good and Complementary good?
When the price of a good X increases, and it leads to decrease in
quantity demand for good Z. Then good Z is a complement for
good X.
* For example: If the price of coffee goes down it leads to higher
demand for sugar. In this case sugar and coffee are complementary
goods
When the price of a good X increases, and it leads to increase in
the demand for good Y. Then good Y is a substitute for good X.
* For example: If price of pizza rises from $4 to $6 then Steven
decides to buy sandwiches worth $5. So, for Steven, sandwich is a
substitute for pizza.
Price and Non-price determinants of Supply
A change in product price only with all other factors remaining
same is a Movement along Supply curve
* Increase in Price => Increase in Quantity Supplied (Movement upward)
* Decrease in Price => Decrease in Quantity Supplied (Movement
downward)
* A change in non-price factor price-level remaining same is a Shift in
the Supply curve
* Increase in Supply => Rightward Shift
* Decrease in Supply => Leftward Shift
- What causes a movement along the supply curve and what causes a shift in the supply curve?
As the price of the product rises; sellers will sell more quantity of the product and vice
-versa and this change takes place along the Supply curve
* If any Non-price Supply factor changes (price remaining fixed) it will be shown as a
Shift in the Supply curve
Price Elasticity of Demand
: A measure of the responsiveness of
quantity demanded to changes in price.
The coefficient of price elasticity of demand (Ed)
Ed = percentage change in quantity demand / percentage
change in price
Income Elasticity of Demand:
A measure of the
responsiveness of quantity demanded to changes in income.
§EY = percentage change in Demand/ percentage change
in income (Y)
Cross Elasticity of Demand
: A measure of the responsiveness in quantity
demanded of one good to changes in the price of another good.
Ec = percentage change in Demand of Good X/ percentage change in the price of
good Y
Why does the Price Elasticity of Demand have a negative sign?
The price elasticity of demand is always negative because price and quantity demanded move in opposite directions1234. A positive percentage change in price implies a negative percentage change in quantity demanded, and vice versa
- How does the Demand curve’s shape vary with the Price Elasticity’s value?
Perfectly Elastic Demand Curve:
Horizontal shape.
Consumers are extremely responsive to price changes.
Even a small change in price leads to an infinite change in quantity demanded.
Example: Commodity markets with identical goods.
Demand Curve:
Relatively flat.
Consumers are responsive to price changes, but not as extreme as in a perfectly elastic curve.
Small price changes result in proportionally larger quantity changes.
Examples: Luxury cars, vacations, designer clothing.
Unitary Elastic Demand Curve:
Constant price elasticity of demand value of 1.
Percentage change in quantity demanded equals percentage change in price.
Total revenue remains constant.
Examples: Staple foods (bread, milk), basic utilities (electricity).
Inelastic Demand Curve:
Steeper slope.
Consumers are less responsive to price changes.
Quantity demanded changes proportionally less.
Examples: Medications, gasoline, utilities.
Perfectly Inelastic Demand Curve:
Vertical shape.
Consumers are completely unresponsive to price changes.
Quantity demanded remains constant regardless of price fluctuations.
Examples: Life-saving medications, critical medical procedures
What happens to the Total Revenues when the Price is changed in the ”Inelastic” zone of the Demand curve?
Larger increase in total revenue
What happens to the Total Revenues when the Price is changed in the ”Elastic” zone of the Demand curve?
Raising total revenue
What factors determine the Price elasticity of demand for a good?
Presence of substitutes
○ Category of the good
○ Time duration for consumer’s adjustment
○ Proportion of Income spent on the good
What does the Sign of the Income Elasticity indicate about the nature of a Good? [Normal or Inferior]
the sign of the income elasticity helps us classify goods as normal, inferior, or luxury based on how their demand responds to changes in income. Positive elasticity indicates normal or luxury goods, while negative elasticity points to inferior goods