Sunday, March 27, 2016

Money And Banking/Monetary Policy Video Notes

Video 1
There are three different types of money: Commodity money, Representative money, and Fiat Money. Commodity money is a good that has multiple purposes that also functions as money. When cows are traded in other countries, cows are being used as commodity money. This is not the most durable type of currency, but it is the oldest type of money in history.
Representative Money means whatever is being used as currency represents a specific quantity of a precious metal. Using a gold standard is a representative system. Dollar bills represented a quantity of silver or gold. The problem with this system was that when the value of the metal changes, the value of the currency that represents that metal will fluctuate as well. It is an unstable system.
Fiat money is legal tender that is backed by the word of the government that it has value. Because the government said it has value, it becomes worth something. The dollar bill today is fiat money.
There are three functions of money: as a medium of exchange, store of value, and as a unit of account. Through money, exchanges happen. When you buy something, an exchange is happening. Money functions as a store of value because when it is stored, it is expected to still have value and be stable while it is in the bank. Money is a unit of account because when we look at price, we see it as a value of worth. Something that is more expensive is usually seen as higher quality.

Video 2
Money Market graph is one that will pop up often on the AP Exam. To draw it, the first thing one must do is label your axis. The Y axis of the money market graph is Interest rate (I). Interest is the price incurred when one borrows. The axis is Quantity of money ( Qm). Demand (Dm) will always slope downward because when the price is high, the quantity demanded is low. That is the Law of Demand. When the interest rate is low, people will borrow more. The supply of money is verticle because it does not vary based on the interest rate. Demand for money is based on interest rate, supply of money is fixed and does not move unless the Fed moves it. If there is an incentive for people to want more money, like a tax credit or some other subsidy, that would increase demand for money. An increase of Demand is a shift to the right, a decrease is a shift to the left. If the demand of money fluctuates, that would put upward pressure on interest rates. The fed can counteract that upward pressure by increasing the money supply. The fed will try to stabilize interest rates because if they are unstable, you cannot predict the level of investment, you cannot predict the level of consumer spending, and you cannot manipulate aggregate demand to give the right level of economic change that the time demands.

Video 3
The Fed has 3 tools of monetary policy. With those three tools, the Fed can use Expansionary technique ( Easy $) or Contractionary technique ( tight $) The Fed can manipulate the reserve requirement which is the percentage of the banks total deposits that they must keep. This could be volt cash or on reserve with a Federal bank. If the Fed wants to increase the money supply, they will lower the required reserves so that banks can use that money as excess reserves and lend it out. If they want to decrease money supply, banks will raise the required reserves, thus having less money to loan out. The second tool is the Discount Rate. This is the rate at which banks can borrow money from the Fed. This is the interest rate that the Fed charges banks to borrow money. The Fed is a Lender of Last resort because banks borrow from the Fed if they are in serious trouble. If the Fed wants to increase the money supply, the Fed will lower the discount rate. If the Fed wants to decrease the money supply, they will increase the discount rate. This is not that affective because just because the rate is lowered, does not mean the banks have to borrow money. The third tool the Fed has to control monetary policy is the ability to buy and sell bonds and treasury securities. This is specifically government bonds and government issued securities. To increase the money supply, the Fed will buy bonds. To decrease the money supply the Fed will sell bonds because then the public will buy the bonds and the Fed will take the money and keep it, thereby decreasing the amount of money in circulation. The part of the FED that makes decisions involving the Fed in open market operations is the FOMC. The Federal Funds rate is the rate that banks borrow money from one another. When the fed buys bonds, it put downward pressure on the Federal Funds rate and vice versa.

Video 4
The Loanable Funds graph must be tied to the money market and show the results in Aggregate Demand and Aggregate Supply. Loanable funds is the money that is available in the banking system for people to borrow. The first step is to label the axis. The Y axis is interest rate and the X axis is quantity of loanable funds. Demand of loanable funds is downward sloping because when the interest rate is higher, people have a disincentive to borrow and vice versa. Supply slopes upward on the graph. Supply of loanable funds is dependent on savings because it comes from the amount of money people have in banks. The more people save, the more money banks have available to loan out to businesses and whatnot, creating business. If people have incentives to save more, we increase the supply of loanable funds with a shift to the right. If people have disincentives to save, we decrease the supply of loanable funds with a shift to left. When the government runs a deficit, they are demanding money in order to spend it. On the graph we would show this as an increase in the demand for loanable funds. You could also show it by decreasing the supply because that would be reducing the national supply of money.

Video 5
The money creation process is how banks add more money into the money supply. Banks create money by making loans. One of the banks tools is the reserve requirement. The money multiplier is used in conjunction with the reserve requirement to find the total amount of money created in a system. The formula for this is 1/ RR. You then multiply that by the amount of the loan, thus finding the total amount of money created in the system. We got this increase of the money from the loan through the process of multiple deposit expansion. One loan to a person goes into their bank and the money will continue to be loaned out to new people, with multiple banks taking out a required reserve percentage thus creating an estimated total amount of money. If any of the banks hold excess reserves, that will decrease the total amount of money created.

Video 6
One must show the connection between the Money Market, Loanable Funds Market, and the Aggregate Demand/Aggregate Supply market. For example if the government running a deficit, they will borrow money from the citizens. When citizens buys a government security, that is a person loaning their money to the government. In the money market, this would be shown as an increase in the demand for money, a right shift on the demand . Interest rate would increase and quantity remains the same because supply is fixed. On the loanable funds graph, the government would be demanding more loanable funds so demand shifts to the right. which would increase interest rates. This causes an increase in government spending, which would increase aggregate demand on the Aggregate Demand/ Aggregate Supply graph, thus increasing price level and an increase in GDP. A change in the supply of money causes a change in the price level. The Fisher Effect says that interest rates and price level have to be equivalent.

Wednesday, March 9, 2016

Saving, MPC, MPS, APC, AND Multipliers

Saving

  • When household is NOT spending
  • The ability to save isome constrained by :
        - The amount of disposable income
        - The propensity to consume
Do households save if DI = 0
   Answer: NO


Average Propensity to Consume (APC)
Average Propensity  to Save(APS)

  • APC + APS = 1
  • 1- APC = APS
  • 1-APS = APC
  • APC>1= DISSAVING
  • -APS=DISSAVING
Marginal Propensity to Consume (MPC)
  • Fracation of any change in disposabless income that is consumed
  • MPC = change in consumption ÷ change in disposable income 
Marginal Propensity to Save (MPS)
  • Fraction of any change in disposable inco,email that is saved
  • MPS = change in savings ÷ change in disposable income
MPC +MPS =1
MPC = 1-MPS
MPS = 1- MPC


PEOPLE DO TWO THINGS WITH DISPOSABLE INCOME  :  CONSUME OR SAVE

Spending Multiplier Effect
  • An initial change in spending (C, Ig, G, Xn) causes a larger change in aggregate spending or aggregate demand
  • Multiplier : change in AD ÷ change in spending
Calculating spending multiplier
  • Can be calculated from MPC OR MPS
  • Multiplier = 1÷ (1-MPC) OR 1÷MPS
  • multipliers are positive when  there is an increase in spending and negative when there is a decrease
Calculating tax multiplier 
  • When government taxes, the multiplier works in reverse because now money is leaving the circular flow
  • -MPC÷1-MPC or -MPC÷MPS
  • If there is a tax cut then the multiplier is positive because there is more money in the circular flow

Disposable Income and Consumption

Disposable Income
  •  Income after taxes or net Income
  • DI= Gross Income - Taxes
2 Choices
 - with disposable income, households can either:
  • Consume: spend money on goods and services
  • Save ( not spend money on goods and services 
Consumption
  • Household spenosing 
  • The ability to consume is constrained by:
             - The amount that of disposable income
             - The propensity to save
  • Do households consume if DI = 0?
       - Autonomous consumption
       - Dissaving


SRAS

Nominal wages- amount of money recieved by a worker per unit of time
r%= 1% -inflation rate

Real wages- amount of goods and services a worker can purchase with their nominal wage
( purchasing power of nominal)

Sticky Wages- Nominal wage level that is set according to an initial price level. does not vary due to labor contractions or other restrictions.

Inflation demand curve- downward sloping
Why? - when interest rates are high, fewer investments are profitable, when iterest rates were low, more investments are profitable.
 Interest Rates and Investment Demand
- Money spent on expenditures on:

  • new plants ( facilities)
  • capitol equipment (machines0
  • technology ( hardare and software)
  • inventories ( goods sold by producer)
  • new homes

How does business makes investment benefits

  • Cost (benefits)
How does business determine the benefits

  • expected rate of return 
How does business count the cost
http://www.showme.com/sh/?h=krhN9wO
  • interest cost
How does business determine the amount of investment they take
-  compare expected value of return to interest cost
  • if expected return is greater than interest then they will invest
  • If expected return is lower than interest cost then they do not invest
SHIFTS IN DEMAND

  •  Cost of Production
       - Lower cost shifts ID right
       - Higher cost shifts ID left
  • Business Taxes
       - Lower business taxes  shifts ID right
       -Higher business taxes shifts ID left
  • Technological change 
        - New technology shifts ID right
        - Lack of technological change shifts I'D left


  • Stock of capitol
       - If an economy is low on capitol then ID shifts right
       - If an economy has much too capitol then I'D shifts
  • Expectations
       - Positive expectation shifts ID right
       - Negative expectations shift ID left

Friday, March 4, 2016

Aggregate Supply

Long Run vs Short Run

Long run:

  •  period of time where input prices are completely flexible and adjust to charges in price level
In the long run, the level of Real GDP supplied is independent of price level
Short Run :
  • Period of time where input prices are sticky and do mot adjust to changes in the price level
  • In the short run the level of Real GDP supplied is directly related to the price level
Long Run Aggregate supply of LRAS marks the level of full employment in economy 
( analogous to the ppc)
Because input prices are COMPLETELY flexible in the long run, changes in price level do not change firms real profits and therefore do not change firm's level of output. This means that the LRAS is vertical at the economy's level of full employment.
Yf, Y*, FE = Full Employment
Changes in SRAS (short run aggregate supply)
  - increase = shift to right
  - decrease = shift to left
Key to understanding shift in SRAS is per unit cost of production
Per unit cost of production = total input cost/ total output

Determinates of SRAS
 1) Input Prices:
 - Domestic Resource Prices - 75% business cost , wages, cost of capitol, raw materials
- Foreign Resource Prices
Aggregate supply intro
- Market power
 Increase in resource prices = SRAS shift to left
  Decrease in resource prices = SRAS shift to Right
Productivity
Productivity = total output/ total input
More Productivity - lower unit production cost = SRAS shift right
Lower Productivity - Higher unit production =SRAS shift to left



Aggregate Demand Curve


  • AD is demand by consumers, businesses, government, and foreign countries.
  • Changes in price level cause movement along the curve
  • AD = C + Ig + G + Xn
Why is AD downward sloping?
   1) Real Balance Effect

          - Higher price levels reduce the purchasing power of money
          - The decreases the quantity of expenditures
          - Lower price levels increase purchasing power and increase expenditure
  Ex: Your bank balance is $50,000 but Indian erodes your purchasing power, causing you to reduce your spending

  2) Interest - Rate Effect
         - When the price level increases, lenders get a REAL return on their loans.
        - Higher interest rates discourage consumer spending and business investment
Ex: An increase in prices leads to an inverse in the interest rate from 5% to 25%. You are les likely to take out loans to improve your business

   3) Foreign Trade Effect
      -When U.S piece levels rise, foreign buyers purchase fewer U.S goods and Americans buy more foreign goods
      - Exports fall and imports dude catsuit real GDP demanded to fall (Xn decreases)
EX : If prices triple in the U.S, Canada Will no longer buy U.S goods , causing quantity demanded of U.S products to fall

Price levels go up and GDP demanded goes down ( vice versa)

Shifters of Aggregate Demand
 GDP = C +Ig + G + Xn
   - There are 2 parts to a shift in AD
       1) A change in C, Ig, G, or Xn
        2) A multiplier effect that produces a greater change than the original change in the 4 components

Increase in AD = AD shift to the right
Decrease in AD = AD shift to the left

Determinates of AD
 1) Consumption
      - Household spending is affected by:                         a) Consumer Wealth
                   - more wealth = more.                                    spending/AD shift to right
                   - less wealth = less spending / AD.                shifts to left
                b) Consumer Expectations
                  - positive expectation =more.                          spending/ AD shifts to right
                  - Negative expectations = less.                     spending / AD shift to left
                 c)  Household indebtedness
                    - Less Debt = more spending / AD.                  shift to the right
                    - More debt = less spending / AD.                 shift to the left
                 d) Taxes
                  - Less Tax =more spending / AD.                   shift to right
                  - More Tax = less spending / AD                     shift to left
 2) Gross Private Domestic Investment
Investment spending is sensative to :
      a)Real Interest Rate
          - Lower Real Interest Rate = more investment ( AD shift right)
          - Higher Real Interest Rate = less investment ( AD shift left)
       b) Expected Returns
            - Higher expected returns = more investment ( AD shift right)
             - Lower expected returns = less investment ( AD shift left)

      Expected Returns are influenced by
         - Expectations of future profitability
         - Technology
         - Degree of excess capacity ( excess stock of capitol)
         - Business Taxes
 3) Government Spending
      - More government spending (AD shift right)
      - Less government spending (AD shift left)
 4) Net Exports
Net Exports are sensative to:
    a) Exchange Rate(international value of $)
        - Strong money = more imports and fewer exports ( AD left)
        - Weak money = fewer imports and more exports (AD shift right)
    b) Relative Increase
        - Strong foreign Economics = more exports ( AD shift right)
        - Weak foreign Economics = Less exports ( AD shift left)