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APPENDIX V

Table App.V-1: Persistence as revealed by the autocorrelation for months 1, 12 and 24, by decade


Decade 1

Decade 2

Decade 3

Commodities

p(1)

p(12)

p(24)

p(1)

p(12)

p(24)

p(1)

p(12)

p(24)

Maize -r

0.947

0.440

0.064

0.973

0.544

0.081

0.948

0.212

0.096

Maize -n

0.947

0.440

0.006

0.964

0.582

-

0.958

0.278

0.013

Wheat -r

0.954

0.441

0.007

0.979

0.673

0.181

0.951

0.385

0.034

Wheat -n

0.966

0.537

0.081

0.969

0.547

-

0.961

0.421

-

Rice -r

0.977

0.341

-

0.977

0.615

0.248

0.902

0.271

-

Rice -n

0.983

0.546

-

0.946

0.533

0.225

0.907

0.295

-

Soybeans -r

0.899

0.111


0.949

0.310

-

0.937

0.280

-

Soybeans -n

0.951

0.454

0.105

0.947

0.083

-

0.943

0.430

-

Rapeseed -r

0.914

0.201


0.947

0.530

0.225

0.967

0.447

-

Rapeseed -n

0.965

0.553

0.112

0.909

0.320

0.148

0.965

0.545

0.099

Rapeoil -r

0.935

-0.195

-

0.967

0.468

-

0.964

0.377

-

Rapeoil -n

0.972

0.442

0.005

0.954

0.303

-

0.963

0.440

-

Palmoil -r

0.904

-


0.952

0.379

-

0.959

0.406

0.015

Palmoil -n

0.965

0.478

0.070

0.945

0.231

-

0.958

0.409

0.061

Soymeal -r

0.930

0.012

12.000

0.940

0.289

0.125

0.956

0.187

-

Soymeal -n

0.948

0.287

-

0.955

0.268

-

0.961

0.266

-

Sunflmeal -r

0.914

0.061

-

0.959

0.541

0.345

0.927

0.257

-

Cocoa -r

0.977

0.490

0.084

0.969

0.606

0.233

0.960

0.254

-

Cocoa -n

0.984

0.667

0.341

0.950

0.440

0.102

0.955

0.338

-

Coffee -r

0.968

0.341

-

0.960

0.446

0.244

0.951

0.292

-

Coffee -n

0.977

0.548

0.260

0.942

0.153

0.189

0.951

0.316

-

Tea -r

0.884

0.82

-

0.959

0.398

0.002

0.891

0.192

-

Tea -n

0.940

0.494

0.315

0.940

0.194

-

0.879

0.210

0.183

Sugar -r

0.944

0.224

-

0.860

0.201

0.015

0.957

0.443

-

Sugar -n

0.929

0.117

-

0.866

0.232

0.002

0.959

0.494

-

Cotton -r

0.954

-

-

0.969

0.374

0.130

0.961

0.356

-

Cotton -n

0.955

0.281

0.145

0.955

0.090

-

0.966

0.392

-

Rubber -r

0.917

-

-

0.938

0.347

0.206

0.936

0.370

0.149

Rubber -n

0.959

0.510

0.152

0.908

0.031

-

0.983

0.537

0.126

Jute -r

0.962

0.474

0.193

0.974

0.090

-

0.933

-

-

Jute -n

0.948

0.020

-0

0.970

0.012

-

0.945

-

-

Sisal -r

0.977

0.272

-

0.974

0.626

0.231

0.960

0.256

0.062

Sisal -n

0.975

0.228

-

0.954

0.382

-

0.967

0.347

0.109

Banana -r

0.706

0.343

0.041

0.660

0.363

0.150

0.594

0.299

-

Banana -n

0.932

0.635

0.400

0.750

0.474

0.20

0.585

0.292

-

Note: p(1) refers to the ith lag of the autocorrelation function of each prices with its value in the ith time period.

A "-" in the cells indicates that the autocorrelation function dies out before or at the ith lag.


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