Peng Kungkea

1. Chapter III smtam::aRkUesdñkic© nig
BaNiC¢kmµ
I smtam::aRkUesdñkic© (Macro Economic Equilibrium)
AggregateExpenditure
Real GDP
0 6000m 7000m 9000m
I2 .
I1 .
E1.
E2.
. A
.B
Inflation GSP
Recession GDP
45

2. emKuNvinieyaK(Investment Multiplier)
Y = I * 1
MPS
Marginal Propensity to saving = 1
1 – MPC
Where : Marginal Propensity to Consuming
Ex: MPC =75% & I =10 million USD, cUrKNnaY=?
IV smtam::aRkUesdñkic© nig
BaNiC¢kmµlMnigm::aRkUesdækic©KWCasmtarvagplitplCatiBit (R
¬tMrUvkarcMNay (Aggregate Demand)

3. KWCaPaBesµµIKñarvagcMNaysrub ¬tMrUvkar¦
nigcMnYnsrubénp>s>sBit ¬pÁt;pÁg;¦
cMnucsmtaenAelIbnÞat;$%dweRk nigGsmta A, B
enAeRkAbnÞat;enH
karrMkilE1 E2 ³eKfakMeNInesdækic©
II cenøaHesdækic© Gn;fynigGtiprNa
(Inflationary and Recessionary Gaps)
Recessionary Gap
ekIteLIgedaysarkMeNIncMNaysrubx<s;CagkMeNIn p>s>s
BitrW AD-AS>0
>plvi)ak

4. -PaBGn;fykargar nikmµPaB ekIneLIg
-bBðaasgÁmmaneRcInnigsµúKsµaj
 dMeNaHRsay
-RTwsþIsamBaØ ³
FnaKarRtUvbBa©uHkarR)ak;¬GacRsUbykBusiness¦
-RTwsþI Keynessian ³
begIánCMenOTukcitþnigkIþsgÇwm
-RTwsþIRKb;RKg ³
kat;bnßybuKÁlikrWebovtS
 Inflationary Gap
ekIteLIgedaysarkMeNIncMNayeRKagTuksrubticCagkMe

5. -KMlatx<s;rvagGñkmannigGñkRk
 dMeNaHRsay ³ pÞuyBI Recessionary Gap
III TæiBlemKuN(Multiplier Effects)
TæiBlemKuN
KWCapleFobrvagbMErbMrYlplitplCatiBit (Real GNP)
nigbMErbMrYldMbUgéncMNay(Initial change in
Spending)
K = In Real GNP
 Initial Spending
>eKalbMNg³ vaytMélcMNay !duløapþl;nUvkMenInGNP

6. Example : year Real GNP Spending
2012 6800m 5800m
2013 7400m 6800m
K=?
.kñugkrNIbMErbMrYlcMNayeRbIR)as;(Consumption)
emKuNGacKNna
K= 1
1-C
C= emKuNrbs; Consumption
Ex: C= 0.75Yd + 100 Edl Yd= Income disposable

7. Y = AD
C + S + T = C + Ig + G
or S + T = Ig + G
Y = C + I + G + NX
Or Y= C + I + G + Ex – IM
Where:
C= Consumption
S= Savings
T= Tax
Ig= Gross Investment
G= Gov’t Expenditure
 karviPaKsmasPaK smtam::aRkUesdñkic©
ចំណូ លក្រោយក្េលបង់េន្ធ (Disposable Income) មាន្ឥទ្ធិេលក្លើ C&S ប៉ុនែន្តមាន្កត្តត ដ៏ទទ្ក្ទ្ៀត

8. Real Assets
-Wealth
Financial Assets
-Expectation
-Real Interest Rate
>ktþaឥទ្ធិេលក្លើc:
-Income
-Wealth
-Indebtness
-Interest Rates
-Expectation
MPC = C and MPS = S
Y Y