Table 12 The computational results of the death cases of COVID-19 of China.

From: A new grey quadratic polynomial model and its application in the COVID-19 in China

date

data

GM(1,1)

DGM(1,1)

NGM(1,1,k,c)

GVM(1,1)

PR(2)

GMQP(1,1)

01/22/2020

9

9.0000

9.0000

9.0000

9.0000

12.3393

9.0000

01/23/2020

17

43.3505

43.5237

3.5662

3.5938

16.2047

16.6241

01/24/2020

25

53.3413

53.5946

17.0303

5.0240

24.6676

26.1427

01/25/2020

41

65.6348

65.9958

32.4983

7.0185

37.7280

39.5647

01/26/2020

56

80.7615

81.2664

50.2685

9.7958

55.3860

57.0369

01/27/2020

80

99.3744

100.0706

70.6835

13.6544

77.6415

78.7117

01/28/2020

106

122.2770

123.2258

94.1369

18.9982

104.4945

104.7470

01/29/2020

132

150.4579

151.7389

121.0809

26.3669

135.9451

135.3069

01/30/2020

170

185.1336

186.8495

152.0351

36.4658

171.9931

170.5615

01/31/2020

213

227.8010

230.0844

187.5962

50.1892

212.6387

210.6874

02/01/2020

259

280.3017

283.3233

228.4500

68.6193

257.8819

255.8677

02/02/2020

304

344.9022

348.8812

275.3842

92.9689

307.7225

306.2925

02/03/2020

361

424.3911

429.6083

329.3037

124.4206

362.1607

362.1591

02/04/2020

425

522.1995

529.0149

391.2482

163.8024

421.1964

423.6721

02/05/2020

490

642.5497

651.4229

462.4120

211.0520

484.8297

491.0438

02/06/2020

563

790.6366

802.1549

544.1674

264.5072

553.0604

564.4946

02/07/2020

636

972.8529

987.7645

638.0906

320.2373

625.8887

644.2531