VARIOUS FORMULA Flashcards
Price Elasticity of Demand
% Change in QD
_____________
% Change in Price
> 1 Elastic P up TR down
Income Elasticity of Demand
% Change in QD
_____________
% Change in Income
+ Normal Inelastic
- Substitute Elastic
Cross Elasticity of Demand
% Change in QD X
______________
% Change in P of Y
+ Substitute Inelastic
- Complement Elastic
Price Elasticity of Supply
% Change in QS
_____________
% Change in P
> 1 Inelastic
Marginal Cost
MC = VC per unit = AVC per unit
Returns to Scale
% increase in output
________________
% change in input
Multiplier Effect
Increase in Output
Equilibrium GDP
Change in Spending
________________
MPS
Marginal Propensity to Save
Change in Savings
_______________
Change in Disposable Income
Marginal Propensity to Consume
Change in Spending
________________
Change in Disposable Income
Personal Disposable Income
MPS + MPC
MPS
1 - MPC
Total Cost Formula
Y= a + b(x)
FC + VC
CAPM
Capital Asset Pricing Model
Rate of Return = RFR + b (ERR - RFR)
Beta Analysis
b > 1 high systematic risk
b
WACC
% share in Capital X Rate of Return
add all three
debt securities
PS
CS
Binomial Option Model
Create a tree
% of probability (MP - EP)
____________________
1 + interest %
Payback Period
Investment
_________
Annual Cash Inflows
if uneven annual cash inflows:
make a table, add inflows until it totals the investment
Discounted Payback
Investment
_________________________
Discounted Annual Cash Inflows