I. Modele cu restricii
Pentru un eantion de volum n=90 uniti, se analizeaz legtura
dintre indicele produciei industriale, rata omajului i indicele
preurilor de consum. S se verifice dac restricia impus asupra
coeficientului de regresie corespunztor ratei omajului, 22 = , este
semificativ statistic, n condiiile riscului asumat de 5%. 1.
Modelul de baz (fr restricii)
Model Summary
.877a .769 .764 5.00052Model1
R R SquareAdjustedR Square
Std. Error ofthe Estimate
Predictors: (Constant), rs, ipca.
ANOVAb
6906.092 2 3453.046 138.093 .000a
2175.453 87 25.0059081.545 89
RegressionResidualTotal
Model1
Sum ofSquares df Mean Square F Sig.
Predictors: (Constant), rs, ipca.
Dependent Variable: ipib.
Coefficientsa
80.600 6.608 12.198 .000.579 .035 .891 16.538 .000
-4.669 .878 -.287 -5.321 .000
(Constant)ipcrs
Model1
B Std. Error
UnstandardizedCoefficients
Beta
StandardizedCoefficients
t Sig.
Dependent Variable: ipia.
2. Modelul cu restricii ( 22 = )
Model Summary
.856a .733 .730 5.22968Model1
R R SquareAdjustedR Square
Std. Error ofthe Estimate
Predictors: (Constant), ipca.
ANOVAb
6619.903 1 6619.903 242.048 .000a
2406.757 88 27.3509026.661 89
RegressionResidualTotal
Model1
Sum ofSquares df Mean Square F Sig.
Predictors: (Constant), ipca.
Dependent Variable: ipi_newb.
Coefficientsa
65.104 4.401 14.794 .000.555 .036 .856 15.558 .000
(Constant)ipc
Model1
B Std. Error
UnstandardizedCoefficients
Beta
StandardizedCoefficients
t Sig.
Dependent Variable: ipi_newa.
II. Modele cu variabile standardizate
Pentru un eantion de volum n=90 de uniti, se analizeaz legtura
dintre indicele produciei industriale (ipi), indicele preurilor de
consum (ipc), rata omajului (rs), rata de referin a dobnzii (rd),
preul de referin al petrolului (ob) i climatul de afaceri din zona
euro (bc). S se stabileasc ordinea importanei influenei
variabilelor independente asupra variabilei dependente n modelul de
regresie identificat.
Coefficientsa
82.946 10.108 8.206 .000.538 .075 .828 7.141 .000
-5.156 .646 -.316 -7.987 .000.005 .194 .003 .028 .978.078 .026
.186 3.032 .003
2.232 .406 .292 5.496 .00083.200 4.341 19.166 .000
.537 .039 .825 13.608 .000-5.154 .638 -.316 -8.082 .000
.078 .025 .187 3.151 .0022.226 .337 .291 6.607 .000
(Constant)ipcrsrdobbc(Constant)ipcrsobbc
Model1
2
B Std. Error
UnstandardizedCoefficients
Beta
StandardizedCoefficients
t Sig.
Dependent Variable: ipia.
