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B GIO DC V O TO

TRNG I HC NGOI THNG C S 2

TI THNH PH H CH MINH

MN KINH T LNG TI

S NH HNG CA S NM KINHNGHIM, GII TNH, BNG CP, NGOING THNG DNG N THU NHP CA

C DN THNH PH H CH MINH

Gio vin hng dn: ThS. Trn Th Tun Anh

Nhm thc hin: Ca 1-Nhm 12 K49C

1. Nguyn Th Chu Ly 1001025089K49A-A1

2. Th Thu Sng 1001025147K49A-N1

3. Nguyn Hng Nhi 1001036146K49C-A9

4. L Th H Tin1001026215 K49C-A9

5. on Quang Trng 1001036240K49C-A9

6. Nguyn Trng Anh Th 1001036528

K49C-A8

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7. Trn Qunh Tin 1001036534K49C-A10

8. Trn Th Thy Trang 1001036539K49C-A10

TP. H CH MINH 29-11-2011

MC LC

Ni dung Trang

CHNG I. TNG QUAN V BI NGHIN CU................................................................3

1. L do chn ti..................................................................................................................32. Mc tiu, phm vi, hnh thc...............................................................................................3

3. Phng php nghin cu......................................................................................................3

CHNG II. THIT LP M HNH TNG QUT ...............................................................5

1. Xy dng m hnh tng qut................................................................................................5

1.1. M hnh tng qut...................................................................................................5

1.2. Gii thch ngha cc bin......................................................................................5

1.2.1. Bin ph thuc............................................................................................51.2.2. Bin c lp................................................................................................5

1.2.2.1.Bin nh lng......................................................................................................5

1.2.2.2.Bin nh tnh.........................................................................................................5

2. Thng k m t kt qu kho st..........................................................................................6

CHNG III. THIT LP M HNH HI QUY BNG PHN M M EVIEWS 6 .0............9

1. M hnh hi quy gc - Kt qu x l s liu bng phn m m Eviews 6 .0..........................9

CHNG IV. KIM NH V KHC PHC BNH CA M HNH.................................9

1. a cng tuyn.......................................................................................................................9

2. T tng quan....................................................................................................................13

3. Phng sai thay i...........................................................................................................17

CHNG V. M HNH HI QUY CUI CNG.................................................................21

1. Phng trnh hi quy cui cng.........................................................................................21

1.1. Bng kt qu sau khi x l Eview..............................................................................21

1.2. Hm hi quy mu cui cng.......................................................................................21

2. Nhn xt m hnh hi quy cui cng.................................................................................22BI TP NHM MN KINH T LNG-NHM 12-CA 1 Page 1

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CHNG VI. TNG KT........................................................................................................23

1.Nhng thun li ca ti.................................................................................................23

2.Nhng kh khn v hn ch ca ti...............................................................................23

CHNG I. TNG QUAN V BI NGHIN CU

1. L do chn ti

Thu nhp lun l vn c mi ngi quan tm, l yu t nh hng rt nhiu n

cht lng cuc sng ca mi ngi. Thu nhp cao gip ta d dng tha mn cc nhu cu

vt cht cng nh tinh thn, c mt cuc sng tin nghi thoi mi hn. Tri li, thu nhp

thp khin cuc sng tr nn kh khn v khng tin trang tri, lo toan cho cuc sng

hng ngy. Do , c c thu nhp cao v n nh l m c ca nhiu ngi.

TP. H Ch Minh l mt trung tm kinh t pht trin ca t nc thu ht nhiu lao

ng n t khp mi ni trn c nc. Tuy nhin c thu nhp cao y khng phi l

iu d dng, n ph thuc vo nhiu yu t nh: : trnh hc vn, bng cp, chuyn mn,

ngoi ng, sc khe, gii tnh, ni sng v lm vic, s nm kinh nghim,Trong , trnh

, bng cp, ngoi ng, gii tnh, s nm kinh nghim l cc yu t c nhiu ngi quantm v cho rng n tc ng rt ln n thu nhp. Th nhng c ng cc yu t ny thc s

nh hng n thu nhp khng? tr li cu hi ny, xin mi n vi ti:

S NH HNG CA S NM KINH NGHIM, GII TNH, BNG CP,NGOI NG THNG DNG N THU NHP CA C DN THNH PH H

CH MINH

2. Mc tiu, phm vi, hnh thc

2.1. Mc tiu

Kho st cc yu t nh hng n thu nhp ca ngi dn thnh ph H Ch Minh

2.2. Phm vi

Tin hnh kho st trc tip ngi dn cc qun, huyn trong a bn thnh ph H

Ch Minh.

T ngy 10/11/2011-16/11/20112.3. Hnh thc

BI TP NHM MN KINH T LNG-NHM 12-CA 1 Page 2

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Kho st trc tip

3. Phng php nghin cu

- Thu thp s liu: tin hnh kho st trc tip vi i tng l ngi dn sng trn a

bn thnh ph H Ch Minh.

- Kt qu kho st (Phiu)

Thu v Hp l861 861

- X l s liu: tin hnh hi quy vi s gip ca Eviewss 6.0, MS Excel, MS

Word.

- Tng hp kt qu v hon chnh bi vit.


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CHNG II. THIT LP M HNH TNG QUT

1. Xy dng m hnh tng qut1.1. M hnh tng qut

Yi= C1 + C2X2i + C3D3i + C4D4i + C5D5i + ei

1.2. Gii thch ngha cc bin

1.2.1. Bin ph thuc

Tn bin Din gii Gi tr n v tnh

Y Thu nhp trung bnh ca ngidn thnh ph H Ch Minh nghn ng/thng

1.2.2. Bin c lp

1.2.2.1. Bin nh lng

Tn

binDin gii

n v

tnh Gi tr

Du

kvng

Ch thch

X2 S nm kinh nghim 0 40 +

S nm kinh

nghim cng nhiu

th tin lng trung

bnh hng thng

cng cao.

1.2.2.2. Bin nh tnh

Tn

binDin gii

Gi tr Du

k vngCh thch

0 1

D3 Gii tnh

N Nam

+/-

Gii tnh c th c hoc khng

c nh hng n thu nhp

hng thngD4 Ngoi ng Ting Anh, +/- Vic c ngoi ng c th c


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c,

ngoi

ng

khc

Php,

Nht hoc khng c nh hng n

thu nhp hng thng

D5Bng cp caonht

T

THPT

tr

xung

T

trung

cp tr

ln

+/-Bng cp c th c hockhng nh hng n thu

nhp hng thng

2. Thng k m t kt qu kho st

2.1. Thu nhp trung bnh mt thng ca ngi dn (Y)

Thu nhp trung bnh/thng (nghn ng)Trung bnh Max Min

7743.84436790000 600

Biu th hin thu nhp theo kho st 861 ngi ca c dn thnh ph H Ch Minh

2.2. S nm kinh nghim (X2)

Biu th hin thu nhp theo s nm kinh nghim

2.3. Gii tnh (D3)


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2.4. Ngoi ng (D4)

Di y l biu th hin t l ngi s dng ngoi ng thng dng( Anh,

Php, Nht) so vi ting c v cc th ting khc.

2.5.

Bng cp cao nht (D5)

CHNG III: THIT LP M HNH HI QUY BNG PHN MM EVIEWS 6.0

1. M hnh hi quy gc- Kt qu x l s liu bng phn mm Eviews 6.0

Dependent Variable: YMethod: Least SquaresDate: 11/29/11 Time: 14:42Sample: 1 861Included observations: 861

Variable Coefficient Std. Error t-Statistic Prob.

C 1847.227 597.8021 3.090031 0.0021X2 217.3924 34.91945 6.225539 0.0000D3 2062.469 491.9638 4.192319 0.0000D4 1758.521 653.3893 2.691384 0.0073

D5 3142.600 633.5054 4.960652 0.0000

R-squared 0.125921 Mean dependent var 7743.844Adjusted R-squared 0.121837 S.D. dependent var 7574.047S.E. of regression 7097.666 Akaike info criterion 20.57871Sum squared resid 4.31E+10 Schwarz criterion 20.60634Log likelihood -8854.135 Hannan-Quinn criter. 20.58929F-statistic 30.82926 Durbin-Watson stat 1.669887Prob(F-statistic) 0.000000

Nhn xt


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Mc ph hp ca m hnh R2=0.1259(12.59%), p_value (F-statistic)=0.0000<

=0.05 nn m hnh tht s c ngha.

Cc bin X2(s nm kinh nghim), D3(gii tnh), D4(trnh ngoi ng), D5(bng

cp cao nht) gii thch c 12.59% bin ng ca bin ph thuc Y(thu

nhp), cn li 87.71% l do sai s v nhng bin c lp cha c a vo m hnh.

Theo kt qu hi quy ta thy cc bin c lp c ngha l X2, D3, D4, D5 thc s

nh hng n m hnh (v p_value< =0.05).

Tuy nhin nh gi s chnh xc s ph hp ca m hnh, nhm s bt u tin

hnh kim nh cc bnh ca m hnh

CHNG IV: PHT HIN V KHC PHC BNH CA M HNH

1. a cng tuyn

Bng cch s dng Eview 6.0, ta c c ma trn tng quan nh sau:

X2 D3 D4 D5

X2 1.000000 0.080501 -0.140827 -0.111260

D3 0.080501 1.000000 -0.026171 -0.045080

D4 -0.140827 -0.026171 1.000000 0.623866

D5 -0.111260 -0.045080 0.623866 1.000000

Da vo bng ma trn a cng tuyn trn, ta thy tr tuyt i ca h s tng

quan gia cc bin trong m hnh u nh hn 0.8, nn m hnh khng b a cng tuyn

nghim trng.

chc chn c th b qua hin tng a cng tuyn, ta tin hnh kim nh bng

hi quy ph:

Dependent Variable: X2

Method: Least Squares

Date: 11/29/11 Time: 14:45

Sample: 1 861

Included observations: 861


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C 8.412296 0.509317 16.51681 0.0000

D3 1.079023 0.479842 2.248707 0.0248

D4 -1.729090 0.636432 -2.716850 0.0067

D5 -0.498735 0.619482 -0.805084 0.4210

R-squared 0.026473 Mean dependent var 7.605807

Adjusted R-squared 0.023065 S.D. dependent var 7.024655

S.E. of regression 6.943169 Akaike info criterion 6.718029

Sum squared resid 41313.91 Schwarz criterion 6.740134

Log likelihood -2888.111 Hannan-Quinn criter. 6.726491

F-statistic 7.768180 Durbin-Watson stat 1.824924

Prob(F-statistic) 0.000040

Dependent Variable: D3


Date: 11/29/11 Time: 14:45

Sample: 1 861



C 0.556798 0.036894 15.09179 0.0000

X2 0.005436 0.002417 2.248707 0.0248

D4 0.012698 0.045366 0.279905 0.7796

D5 -0.044523 0.043961 -1.012787 0.3114






F-statistic 2.272507 Durbin-Watson stat 1.821839Prob(F-statistic) 0.078744


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Date: 12/01/11 Time: 15:13

Sample: 1 861Included observations: 861


C 0.325346 0.029210 11.13799 0.0000

X2 -0.004939 0.001818 -2.716850 0.0067

D3 0.007199 0.025719 0.279905 0.7796

D5 0.599281 0.026036 23.01763 0.0000










Date: 12/01/11 Time: 15:14

Sample: 1 861



C 0.214186 0.031393 6.822773 0.0000

X2 -0.001515 0.001882 -0.805084 0.4210

D3 -0.026850 0.026511 -1.012787 0.3114

D4 0.637490 0.027696 23.01763 0.0000



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Da vo cc bng trn, ta thy:

=2

2R

0.026473 < 0.9

x2 khng c a cng tuyn

=

2

3R

0.007892 < 0.9

d3 khng c a cng tuyn

=2

4R

0.394428 < 0.9


=2

5

R

0.390497 < 0.9


V2

R

ca hi quy ph < 0.9 ta coi nh khng c a cng tuyn.

Ngoi ra ta dng nhn t phng i phng sai

21

1

J

J

RVIF

=

00070131.10.0264731

1

22=

=VIF

< 10

x2 khng c a cng tuyn

00006228.10.0078921

1

23=

=VIF

< 10



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18423561.10.3944281

1

24=

=VIF

< 10


17992416.10.3904971

1

25=

=VIF

< 10


V VIF nh nn c th coi nh khng c a cng tuyn.

Vy ta b qua hin tng a cng tuyn trong m hnh.

2. T tng quan

Ta kim nh Durbin-Watson m hnh bng Eviews 6 v thu c kt qu:

Theo kt qu kim nh Durbin-Watson, ta c: ch s Durbin-Watson = 1.669887 nmBI TP NHM MN KINH T LNG-NHM 12-CA 1 Page 11

Dependent Variable: Y


Date: 11/29/11 Time: 14:42

Sample: 1 861



C 1847.227 597.8021 3.090031 0.0021

X2 217.3924 34.91945 6.225539 0.0000

D3 2062.469 491.9638 4.192319 0.0000

D4 1758.521 653.3893 2.691384 0.0073

D5 3142.600 633.5054 4.960652 0.0000




Sum squared resid 4.31E+10 Schwarz criterion 20.60634




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trong khong (1;3) nn da theo kinh nghim m hnh khng c bnh, tc l khng c ttng quan bc nht.

Ta kim nh li bng phng php Breusch-Godfrey:

Breusch-Godfrey Serial Correlation LM Test:

F-statistic 24.26013 Prob. F(1,855) 0.0000

Obs*R-squared 23.75630 Prob. Chi-Square(1) 0.0000

Test Equation:

Dependent Variable: RESID


Date: 11/30/11 Time: 09:16

Sample: 1 861


Presample missing value lagged residuals set to zero.


C 264.6895 592.2849 0.446896 0.6551

X2 -2.737463 34.45895 -0.079441 0.9367

D3 -132.2121 486.1546 -0.271955 0.7857

D4 -39.83929 644.7396 -0.061791 0.9507

D5 -233.7972 626.8695 -0.372960 0.7093

RESID(-1) 0.167283 0.033963 4.925457 0.0000

R-squared 0.027592 Mean dependent var 6.30E-13







Theo kt qu ca kim nh Breusch-Godfrey, ta c: nR2=23.75630, p_value =0.0000

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Date: 11/30/11 Time: 11:35

Sample (adjusted): 2 861

Included observations: 860 after adjustments


C 951.2470 616.9399 1.541879 0.1235

X2 209.5526 34.50238 6.073570 0.0000

D3 1945.973 486.4247 4.000564 0.0001

D4 1727.711 644.9221 2.678946 0.0075

D5 2849.669 628.1981 4.536259 0.0000

Y(-1) 0.157935 0.031862 4.956806 0.0000








Sau kim nh BG test ta c:

Breusch-Godfrey Serial Correlation LM Test:


Obs*R-squared 1.156469 Prob. Chi-Square(1) 0.2822

Test Equation:

Dependent Variable: RESID


Date: 11/30/11 Time: 11:44

Sample: 2 861


Presample missing value lagged residuals set to zero.


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C -593.3245 828.8777 -0.715817 0.4743

X2 -3.876195 34.68844 -0.111743 0.9111

D3 8.363387 486.4450 0.017193 0.9863

D4 5.978996 644.8902 0.009271 0.9926

D5 -24.27670 628.5518 -0.038623 0.9692

Y(-1) 0.081136 0.082136 0.987820 0.3235

RESID(-1) -0.095185 0.088815 -1.071728 0.2841

R-squared 0.001345 Mean dependent var -3.24E-13

Adjusted R-squared -0.005680 S.D. dependent var 6984.664






Theo kt qu ca kim nh Breusch-Godfrey, ta c: nR2=1.156469, p_value =0.2822>=0.05, tc l m hnh khng b t tng quan bc nht.

3. Phng sai thay i

Tin hnh kim nh phng sai thay i bng Eviews 6.0 ta c

Heteroskedasticity Test: White

F-statistic 2.955112 Prob. F(17,842) 0.0001Obs*R-squared 48.42182 Prob. Chi-Square(17) 0.0001Scaled explained SS 717.7799 Prob. Chi-Square(17) 0.0000

Test Equation:Dependent Variable: RESID^2Method: Least SquaresDate: 12/01/11 Time: 11:49Sample: 2 861Included observations: 860Collinear test regressors dropped from specification


C 25663110 45627354 0.562450 0.5740X2 3053537. 4881237. 0.625566 0.5318

X2^2 -147096.2 133340.2 -1.103165 0.2703

X2*D3 3790536. 2770583. 1.368136 0.1716X2*D4 1588416. 3391690. 0.468326 0.6397X2*D5 3229743. 3321512. 0.972371 0.3311

X2*Y(-1) 8.353931 243.2484 0.034343 0.9726


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D3 -73315827 43531194 -1.684214 0.0925D3*D4 29497580 51955979 0.567742 0.5704D3*D5 62874843 50308835 1.249777 0.2117

D3*Y(-1) 3531.414 2710.499 1.302865 0.1930D4 -57926247 57241018 -1.011971 0.3118

D4*D5 67779884 50205679 1.350044 0.1774D4*Y(-1) 4140.202 3773.025 1.097316 0.2728

D5 -81003489 64327788 -1.259230 0.2083

D5*Y(-1) 766.6460 3663.381 0.209273 0.8343Y(-1) 431.4553 4590.956 0.093979 0.9251Y(-1)^2 -0.076654 0.049659 -1.543606 0.1231

R-squared 0.056304 Mean dependent var 48728803Adjusted R-squared 0.037251 S.D. dependent var 2.67E+08S.E. of regression 2.62E+08 Akaike info criterion 41.62871Sum squared resid 5.79E+19 Schwarz criterion 41.72827Log likelihood -17882.35 Hannan-Quinn criter. 41.66683F-statistic 2.955112 Durbin-Watson stat 2.018677Prob(F-statistic) 0.000056

Nhn xt: ch s p_value=0.0001 < = 0.05 nn m hnh b phng sai thay i

Khc phc

Hi quy vi trng s 1/abs_residf, ta c m hnh hi quy mi:

Dependent Variable: YMethod: Least Squares

Date: 12/01/11 Time: 12:50Sample (adjusted): 2 861Included observations: 860 after adjustmentsWeighting series: 1/ABS_RESIDFWhite Heteroskedasticity-Consistent Standard Errors & Covariance


C 1160.886 343.0318 3.384194 0.0007X2 283.1090 35.49333 7.976401 0.0000D3 1513.613 325.6152 4.648471 0.0000D4 1075.444 314.2561 3.422188 0.0007D5 2493.195 319.8008 7.796086 0.0000

Y(-1) 0.164490 0.041613 3.952828 0.0001

Weighted Statistics


Unweighted Statistics

R-squared 0.140942 Mean dependent var 7745.291Adjusted R-squared 0.135913 S.D. dependent var 7578.335S.E. of regression 7044.539 Sum squared resid 4.24E+10Durbin-Watson stat 2.016405


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Sau , ta tin hnh kim nh White mt ln na, ta c

Heteroskedasticity Test: White


Obs*R-squared 22.74132 Prob. Chi-Square(18) 0.2007Scaled explained SS 138.2663 Prob. Chi-Square(18) 0.0000

Test Equation:Dependent Variable: WGT_RESID^2Method: Least SquaresDate: 12/01/11 Time: 13:01Sample: 2 861Included observations: 860White Heteroskedasticity-Consistent Standard Errors & CovarianceCollinear test regressors dropped from specification

Variable Coefficient Std. Error t-Statistic Prob.C 16948678 48986255 0.345988 0.7294

WGT^2 5473132. 5633313. 0.971565 0.3315X2^2*WGT^2 -22235.72 50905.00 -0.436808 0.6624

X2*WGT^2 -871770.2 4226493. -0.206263 0.8366X2*D3*WGT^2 2244112. 2110205. 1.063457 0.2879X2*D4*WGT^2 761129.7 935940.7 0.813224 0.4163X2*D5*WGT^2 1761034. 1287530. 1.367761 0.1718

X2*Y(-1)*WGT^2 139.6361 333.2857 0.418968 0.6753D3^2*WGT^2 -34355455 20880924 -1.645303 0.1003

D3*D4*WGT^2 8345983. 5227049. 1.596691 0.1107D3*D5*WGT^2 13608000 7496410. 1.815269 0.0698

D3*Y(-1)*WGT^2 3519.370 3203.548 1.098585 0.2723D4^2*WGT^2 -5628259. 4554444. -1.235773 0.2169

D4*D5*WGT^2 13227327 6395829. 2.068118 0.0389D4*Y(-1)*WGT^2 606.7812 809.0601 0.749983 0.4535

D5^2*WGT^2 -9599210. 8215530. -1.168422 0.2430D5*Y(-1)*WGT^2 731.4073 841.6660 0.868999 0.3851Y(-1)^2*WGT^2 -0.019679 0.094623 -0.207974 0.8353

Y(-1)*WGT^2 -1510.924 1501.901 -1.006008 0.3147

R-squared 0.026443 Mean dependent var 26711876Adjusted R-squared 0.005606 S.D. dependent var 93856181S.E. of regression 93592719 Akaike info criterion 39.56865Sum squared resid 7.37E+18 Schwarz criterion 39.67374Log likelihood -16995.52 Hannan-Quinn criter. 39.60888

F-statistic 1.269052 Durbin-Watson stat 2.052352Prob(F-statistic) 0.200312

Nhn xt: ch s p_value = 0.2007 > =0.05 nn m hnh khng cn b hin tng phng sai

thay i


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CHNG IV: PHNG TRNH HI QUY CUI CNG

1. Phng trnh hi quy cui cng

1.1. Bng kt qu sau khi x l Eview


Method: Least SquaresDate: 12/01/11 Time: 12:50Sample (adjusted): 2 861Included observations: 860 after adjustments


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Weighting series: 1/ABS_RESIDFWhite Heteroskedasticity-Consistent Standard Errors & Covariance


C 1160.886 343.0318 3.384194 0.0007X2 283.1090 35.49333 7.976401 0.0000D3 1513.613 325.6152 4.648471 0.0000

D4 1075.444 314.2561 3.422188 0.0007D5 2493.195 319.8008 7.796086 0.0000Y(-1) 0.164490 0.041613 3.952828 0.0001

Weighted Statistics


Unweighted Statistics

R-squared 0.140942 Mean dependent var 7745.291Adjusted R-squared 0.135913 S.D. dependent var 7578.335S.E. of regression 7044.539 Sum squared resid 4.24E+10Durbin-Watson stat 2.016405

1.2. Hm hi quy mu cui cng

Yi= 1160.886 + 283.1090X2i + 1513.613D3i + 1075.444D4i + 2493.195D5i +0.164490Yi(-1)

2. Nhn xt m hnh hi quy cui cng

R2= 0.1936 . H s xc nh ca m hnh cui cng tuy khng cao nhng ch sp_value

(F-statistic)=0.0000< =0.05 nn m hnh tht s c ngha.

Cc bin c lp gii thch c 19.3611% bin ng ca bin ph thuc Y,

cn li 80.6389% l do sai s v nhng bin c lp cha c a vo m hnh.

Gii thch ngha ca cc bin c lp

Tn bin Chiu tc ng Din gii

X2

(s nm kinh

nghim)

Cng chiu Vi cc yu t khc khng i, khi c thm 1

nm kinh nghim th thu nhp s tng 283.1090

nghn ng/ thngD3 Cng chiu Vi cc yu t khc nh nhau th 1 ngi nam


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(gii tnh) s c thu nhp cao hn 1 ngi n l 1513.613

nghn ng/thng

D4

(ngoi ng)

Cng chiu Vi cc yu t khc nh nhau, 1 ngi bit

ting Anh, ting php hoc ting Nht s c

thu nhp cao hn nhng ngi bit cc thting khc l 1075.444 nghn ng/thng

D5

(bng cp cao

nht)

Cng chiu Vi cc yu t khc nh nhau th 1 ngi c

bng trung cp tr ln s c thu nhp cao

hn so vi 1 ngi c bng PTTH tr xung

l 2493.195 nghn ng/thng

CHNG V: TNG KT

1. Nhng thun li v nhng im t c trong vic nghin cu ti

Bng kho st c gio vin son sn nn c ni dung hp l. T , vic la chn

cc bin d dng hn.

c gio vin hng dn tn tnh

Kho st thu nhp c tin hnh bi c lp nn vic ly s liu cng n gin v

thun li hn, c nhiu mu quan st hn.

vn dng c phn ln cc kin thc c hc trong kinh t lng vo vic xy

dng v phn tch m hnh


8/3/2019 KTL-NH12-CA 1

21/21

S dng nhiu cch thc khc nhau kim nh v khc phc bnh ca m hnh

Sau khi m hnh c khc phc cc vn t tng quan, phng sai thay i, cc

bin c lp c th gii thch chnh xc hn v s ph thuc ca thu nhp vo cc

yu t ngoi ng, bng cp, gii tnh, kinh nghim.

2. Nhng kh khn v hn ch ca ti

Thu nhp l mt vn t nh nn vic kho st gp nhiu kh khn

Kin thc ca cc thnh vin trong nhm cn hn ch

Thi gian khng nhiu

a s cc bin c lp l bin nh tnh nn vic x l s liu bng eviews khng

c d dng

Cha vn dng c nhiu cc kin thc hc trong mn kinh t lng vo vic

chn bin c lp

M hnh cha phn tch c cc yu t nh hng ln ti thu nhp

BI TP NHM MN KINH T LNG NHM 12 CA 1 P 20

ktl-nh12-ca 1

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