Unit 2B (Micro) Flashcards
(33 cards)
Elasticity
A measure of how much we respond to a price change
Inelastic
I-> straight up and down
- When a high price change, the quantity demanded barely changes
- EX: cigarettes, insulin
- Things that are small fractions of income like salt
Unitary elastic
Middle ground and normal product
Elastic
Horizontal curbe
- Put a little tax and lose a lot of people
- EX tax on sugary drinks
- Substitutes, fad products
- Luxury goods/ goods that are a large percentage of income
Demand curve
- substitution effect
- income effect
Substitution- When price goes up, substitute something else
- Income: as price goes up things become a greater percentage of income and I cant afford to buy as much of it
- These effects usually work together unless the good is inferior
How does elasticity change ALONG the demand curve
Eat Up Idiots Left side elastic middle section unit elastic right side inelastic
Demand elasticity formula and interpretation
%change in quantity demanded/%change in price
If under 1, inelastic
if over 1, elastic
if exactly 1 then unit elastic
INELASTIC price and total revenue relationship
quantity and price effect relationship
Same if price up, tr up price effect>quantity effect So (Q/P)<1 ***price effect is the vertical shift in the line and quantity effect is the horizontal effect
ELASTIC price and total revenue relationship
quantity and price effect relationship
inverse if price up, tr down price effect< quantity effect (Q/P)>1 ***price effect is the vertical shift in the line and quantity effect is the horizontal effect
Cross price elasticity formula and meaning
%change in quantity demanded of product A/(% change in PRICE of B)
- If NEGATIVE, compliments
- if POSITIVE, subsitutes
Income elasticity formula
(% change in quantity demanded/ %change in income)
If positive, it is a normal good
If negative, it is an inferior good
Tax types
- Progressive
- Regressive
- Porportional
Progressive tax type
-Like an increasing exponential graph
-The more you make the more percentage of income you pay
EX: income tax
Regressive tax type
- More you make the less you may
- Looks like second quandrant of a circle graph
- EX: payroll tax
- Sales tax (the more you make the less percentage of your income sales tax is)
Porportional tax type
- Tax rate is fixed and the % income is the same
- NOT sales tax
- Increasing linear graph
Who bears the tax?: Demand elastic and supply inelastic
Consumers pay little, producers pay alot
Who bears the tax?: Demand inelastic and supply elastic
Consumers pay a lot and producers pay little
Who bears the tax?: Both supply and demand are elastic
Both pay basically the same amount
Who bears the tax?: Both supply and demand are inelastic
Both pay basically the same
Consumer choice theory formula
Marginal utility of candy/ price of candy
marginal utility of chips/ price of chips
divide both sides
if the numbers on either side of the = equal each other, you are at consumer equilibirum
if you get 5 candy and 4 chips, you will opt to get more candy and less chips (but as you do that the marginal utiltiy for chips increases) and you keep going until you find equilibrium
An important determinant of the price of elasticity of demand is the
Availability of substitutes
A price cieling will cause a larger shortage when demand is ____ and supply is ___
Elastic; inelastic
Decreases in input costs and the longer length of time since a price a price change will tend to :
increases/decrease the price elasticity of supply/demand
Increase the price elasticity of
According to the substitution effect, a decrease in the price of a product leads to an increase in the quantity of the product demanded because buyers
Purchase more of the now relatively less expensive good