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Les déterminants de l'inflation en Guinée.

( Télécharger le fichier original )
par Mamadou Safayiou DIALLO
Université de Sonfonia - Master 2014
  

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Annexe 1 : Test de stationnarité sur les variables à niveau

Null Hypothesis: LINF has a unit root

 

Exogenous: Constant, Linear Trend

 

Lag Length: 0 (Automatic based on SIC, MAXLAG=1)

 
 
 
 
 
 
 
 
 
 
 
 
 

t-Statistic

  Prob.*

 
 
 
 
 
 
 
 
 
 

Augmented Dickey-Fuller test statistic

-1.905050

 0.6220

Test critical values:

1% level

 

-4.374307

 
 

5% level

 

-3.603202

 
 

10% level

 

-3.238054

 
 
 
 
 
 
 
 
 
 
 

*MacKinnon (1996) one-sided p-values.

 

Null Hypothesis: LM2 has a unit root

 

Exogenous: Constant

 
 

Lag Length: 0 (Automatic based on SIC, MAXLAG=1)

 
 
 
 
 
 
 
 
 
 
 
 
 

t-Statistic

  Prob.*

 
 
 
 
 
 
 
 
 
 

Augmented Dickey-Fuller test statistic

-0.240156

 0.9212

Test critical values:

1% level

 

-3.711457

 
 

5% level

 

-2.981038

 
 

10% level

 

-2.629906

 
 
 
 
 
 
 
 
 
 
 

*MacKinnon (1996) one-sided p-values.

 
 
 
 
 
 

Null Hypothesis: LPIB has a unit root

 

Exogenous: Constant

 
 

Lag Length: 0 (Automatic based on SIC, MAXLAG=6)

 
 
 
 
 
 
 
 
 
 
 
 
 

t-Statistic

  Prob.*

 
 
 
 
 
 
 
 
 
 

Augmented Dickey-Fuller test statistic

-2.228741

 0.2015

Test critical values:

1% level

 

-3.711457

 
 

5% level

 

-2.981038

 
 

10% level

 

-2.629906

 
 
 
 
 
 
 
 
 
 
 

*MacKinnon (1996) one-sided p-values.

 

Null Hypothesis: LTCH has a unit root

 

Exogenous: Constant, Linear Trend

 

Lag Length: 0 (Automatic based on SIC, MAXLAG=6)

 
 
 
 
 
 
 
 
 
 
 
 
 

t-Statistic

  Prob.*

 
 
 
 
 
 
 
 
 
 

Augmented Dickey-Fuller test statistic

-2.833789

 0.1987

Test critical values:

1% level

 

-4.356068

 
 

5% level

 

-3.595026

 
 

10% level

 

-3.233456

 
 
 
 
 
 
 
 
 
 
 

*MacKinnon (1996) one-sided p-values.

 

Annexe 2 : Test de stationnarité sur les variables en différence première

Null Hypothesis: D(LINF,2) has a unit root

 

Exogenous: Constant

 
 

Lag Length: 0 (Automatic based on SIC, MAXLAG=1)

 
 
 
 
 
 
 
 
 
 
 
 
 

t-Statistic

  Prob.*

 
 
 
 
 
 
 
 
 
 

Augmented Dickey-Fuller test statistic

-5.322428

 0.0002

Test critical values:

1% level

 

-3.737853

 
 

5% level

 

-2.991878

 
 

10% level

 

-2.635542

 
 
 
 
 
 
 
 
 
 
 

*MacKinnon (1996) one-sided p-values.

 

Null Hypothesis: D(LM2) has a unit root

 

Exogenous: Constant

 
 

Lag Length: 0 (Automatic based on SIC, MAXLAG=1)

 
 
 
 
 
 
 
 
 
 
 
 
 

t-Statistic

  Prob.*

 
 
 
 
 
 
 
 
 
 

Augmented Dickey-Fuller test statistic

-5.049417

 0.0004

Test critical values:

1% level

 

-3.724070

 
 

5% level

 

-2.986225

 
 

10% level

 

-2.632604

 
 
 
 
 
 
 
 
 
 
 

*MacKinnon (1996) one-sided p-values.

 

Null Hypothesis: D(LPIB) has a unit root

 

Exogenous: Constant

 
 

Lag Length: 0 (Automatic based on SIC, MAXLAG=6)

 
 
 
 
 
 
 
 
 
 
 
 
 

t-Statistic

  Prob.*

 
 
 
 
 
 
 
 
 
 

Augmented Dickey-Fuller test statistic

-4.015726

 0.0051

Test critical values:

1% level

 

-3.724070

 
 

5% level

 

-2.986225

 
 

10% level

 

-2.632604

 
 
 
 
 
 
 
 
 
 
 

*MacKinnon (1996) one-sided p-values.

 

Null Hypothesis: D(LTCH) has a unit root

 

Exogenous: Constant, Linear Trend

 

Lag Length: 0 (Automatic based on SIC, MAXLAG=6)

 
 
 
 
 
 
 
 
 
 
 
 
 

t-Statistic

  Prob.*

 
 
 
 
 
 
 
 
 
 

Augmented Dickey-Fuller test statistic

-4.643417

 0.0055

Test critical values:

1% level

 

-4.374307

 
 

5% level

 

-3.603202

 
 

10% level

 

-3.238054

 
 
 
 
 
 
 
 
 
 
 

*MacKinnon (1996) one-sided p-values.

 

Annexe 3:Test de cointégration sur les variables

Unrestricted Cointegration Rank Test (Maximum Eigenvalue)

 
 
 
 
 
 
 
 
 
 

Hypothesized

 

Max-Eigen

0.05

 

No. of CE(s)

Eigenvalue

Statistic

Critical Value

Prob.**

 
 
 
 
 
 
 
 
 
 

None *

 0.947536

 76.63840

 24.15921

 0.0000

At most 1

 0.431193

 14.66956

 17.79730

 0.1391

At most 2

 0.298535

 9.219188

 11.22480

 0.1104

At most 3

 0.002081

 0.054155

 4.129906

 0.8488

 
 
 
 
 
 
 
 
 
 

 Max-eigenvalue test indicates 1 cointegrating eqn(s) at the 0.05 level

 * denotes rejection of the hypothesis at the 0.05 level

 **MacKinnon-Haug-Michelis (1999) p-values

 

Annexe 4:Estimation du modèle

Dependent Variable: D(LINF)

 
 

Method: Least Squares

 
 

Date: 09/18/13 Time: 13:08

 
 

Sample (adjusted): 1987 2012

 
 

Included observations: 26 after adjustments

 
 
 
 
 
 
 
 
 
 
 

Variable

Coefficient

Std. Error

t-Statistic

Prob.  

 
 
 
 
 
 
 
 
 
 

C

4.426862

0.895840

4.941577

0.0001

D(LM2)

0.027079

0.089098

0.303921

0.7647

D(LPIB)

-1.121127

0.790456

-1.418330

0.1732

D(LTCH)

0.331969

0.093926

3.534380

0.0024

LINF(-1)

-0.331270

0.086256

-3.840565

0.0012

LM2(-1)

0.161944

0.061725

2.623646

0.0172

LPIB(-1)

-0.639451

0.139714

-4.576853

0.0002

LTCH(-1)

0.225211

0.089245

2.523516

0.0212

 
 
 
 
 
 
 
 
 
 

R-squared

0.829224

    Mean dependent var

0.122881

Adjusted R-squared

0.762811

    S.D. dependent var

0.091748

S.E. of regression

0.044683

    Akaike info criterion

-3.130775

Sum squared resid

0.035939

    Schwarz criterion

-2.743668

Log likelihood

48.70007

    Hannan-Quinn criter.

-3.019302

F-statistic

12.48585

    Durbin-Watson stat

1.737499

Prob(F-statistic)

0.000009

 
 
 
 
 
 
 
 
 
 
 
 
 

Annexe 5: Tests de validation du modèle à correction d'erreur(ECM)

2 Test de Normalité

3 Test de Ramsey

Ramsey RESET Test:

 
 
 
 
 
 
 
 
 
 
 
 

F-statistic

0.398183

    Prob. F(1,17)

0.5364

Log likelihood ratio

0.601964

    Prob. Chi-Square(1)

0.4378

 
 
 
 
 
 
 
 
 
 

4 Test de Breusch-Godfrey

Breusch-Godfrey Serial Correlation LM Test:

 
 
 
 
 
 
 
 
 
 
 

F-statistic

0.248681

    Prob. F(1,17)

0.6244

Obs*R-squared

0.374853

    Prob. Chi-Square(1)

0.5404

 
 
 
 
 
 
 
 
 
 

5 Test de White

Heteroskedasticity Test: White

 
 
 
 
 
 
 
 
 
 
 

F-statistic

1.857725

    Prob. F(7,18)

0.1371

Obs*R-squared

10.90521

    Prob. Chi-Square(7)

0.1428

Scaled explained SS

5.797912

    Prob. Chi-Square(7)

0.5635

 
 
 
 
 
 
 
 
 
 

6 Test de Arch

Heteroskedasticity Test: ARCH

 
 
 
 
 
 
 
 
 
 
 
 

F-statistic

1.949941

    Prob. F(2,21)

0.1672

Obs*R-squared

3.758941

    Prob. Chi-Square(2)

0.1527

 
 
 
 
 
 
 
 
 
 

7 Test de Chow

Chow Breakpoint Test: 2002 

 

Null Hypothesis: No breaks at specified breakpoints

Varying regressors: All equation variables

 

Equation Sample: 1987 2012

 
 
 
 
 
 
 
 
 
 
 

F-statistic

2.740380

 

Prob. F(8,10)

0.0689

Log likelihood ratio

30.17932

 

Prob. Chi-Square(8)

0.0002

Wald Statistic 

21.92304

 

Prob. Chi-Square(8)

0.0051

 
 
 
 
 
 
 
 
 
 

8 Test de Cusum

9 Test de Cusum of square

Annexe 6: Données de l'étude

ANNEE

INF

M2 en milliards de GNF

PIB réel en milliards de GNF

TCH US/GNF

1986

18.89200

46.80000

3521.560

333.4500

1987

24.04200

87.40000

3637.770

474.4000

1988

29.24800

104.5000

3867.240

591.6500

1989

35.77500

132.2000

4022.070

593.0000

1990

41.95700

156.1000

4195.980

660.8000

1991

53.39200

207.9000

4257.030

757.8000

1992

67.39100

255.3000

4396.340

903.0000

1993

67.84200

315.0000

4618.290

955.6000

1994

68.79100

304.7000

4803.050

977.7000

1995

72.83400

339.5000

5027.840

991.5000

1996

73.47100

350.0000

5287.120

1008.400

1997

74.52500

410.7000

5561.050

1099.900

1998

76.31000

435.9200

5816.030

1232.800

1999

79.00500

474.1300

6078.370

1387.400

2000

86.93900

585.4400

6253.720

1797.152

2001

91.22000

671.8400

6489.420

1949.863

2002

93.79400

800.9800

6759.830

1975.792

2003

100.0000

1083.310

6840.950

2000.000

2004

116.5220

1484.640

7001.880

2267.900

2005

148.4380

2049.200

7210.880

3640.000

2006

204.2270

3217.200

7390.920

5650.000

2007

230.7490

3403.900

7520.820

4179.250

2008

263.2750

4727.170

7892.120

4596.970

2009

276.6830

5945.120

7869.650

4773.528

2010

332.3690

10367.90

8022.110

5987.800

2011

398.0140

11325.65

8339.340

6141.120

2012

461.1150

11450.22

8691.040

6318.820

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