EXERCÍCIO 10 – ANÁLISE DA CORRELAÇÃO E DA REGRESSÃO. ANÁLISE DA COVARIÂNCIA Investigação Científica em Psicologia: Teoria e Prática
	SPSS	OUTPUT 18
	Correlação e Covariância

Comandos

GET

 FILE='C:\Documents and Settings\user\Desktop\E10_DATA.sav'.

CORRELATIONS

 /VARIABLES=per_1 per_3

 /PRINT=TWOTAIL NOSIG

 /STATISTICS DESCRIPTIVES XPROD

 /MISSING=PAIRWISE.

Output

Correlations

Descriptive Statistics
	Mean	Std. Deviation	N
PER_1	12,6333	2,4280	30
PER_3	12,8000	2,1560	30

Correlations
		PER_1	PER_3
PER_1	Pearson Correlation	1,0000	,7364(**)
	Sig. (2-tailed)	,	,0000
	Sum of Squares and Cross-products	170,9667	111,8000
	Covariance	5,8954	3,8552
	N	30	30
PER_3	Pearson Correlation	,7364(**)	1,0000
	Sig. (2-tailed)	,0000	,
	Sum of Squares and Cross-products	111,8000	134,8000
	Covariance	3,8552	4,6483
	N	30	30
** Correlation is significant at the 0.01 level (2-tailed).

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SPSS	OUTPUT 19
Análise da Regressão Simples

Comandos

GET

 FILE='C:\Documents and Settings\user\Desktop\E10_DATA.sav'.

REGRESSION

 /MISSING LISTWISE

 /STATISTICS COEFF OUTS R ANOVA

 /CRITERIA=PIN(.05) POUT(.10)

 /NOORIGIN

 /DEPENDENT per_3

 /METHOD=ENTER per_1.

GRAPH

 /SCATTERPLOT(BIVAR)=per_1 WITH per_3

 /MISSING=LISTWISE.

Output

Regression

Variables Entered/Removed(b)
Model	Variables Entered	Variables Removed	Method
1	PER_1(a)	,	Enter
a All requested variables entered.
b Dependent Variable: PER_3

Model Summary
Model	R	R Square	Adjusted R Square	Std. Error of the Estimate
1	,7364(a)	,5424	,5260	1,4843
a Predictors: (Constant), PER_1

ANOVA(b)
Model		Sum of Squares	df	Mean Square	F	Sig.
1	Regression	73,1092	1	73,1092	33,1826	,0000(a)
	Residual	61,6908	28	2,2032
	Total	134,8000	29
a Predictors: (Constant), PER_1
b Dependent Variable: PER_3

Coefficients(a)
		Unstandardized Coefficients		Standardized Coefficients	t	Sig.
Model		B	Std. Error	Beta
1	(Constant)	4,5387	1,4595		3,1097	,0043
	PER_1	,6539	,1135	,7364	5,7604	,0000
a Dependent Variable: PER_3

Graph

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SPSS	OUTPUT 20
Análise da Covariância – Teste para a Interacção entre o Tratamento e a Covariável

Comandos

GET

 FILE='C:\Documents and Settings\user\Desktop\E04_DATA2.sav'.

UNIANOVA

 pos_test BY vi WITH pre_test

 /METHOD = SSTYPE(3)

 /INTERCEPT = INCLUDE

 /CRITERIA = ALPHA(.05)

 /DESIGN = vi pre_test pre_test*vi.

Output

Univariate Analysis of Variance

Between-Subjects Factors
		N
VI	1	15
	2	15

Tests of Between-Subjects Effects Dependent Variable: POS_TEST
Source	Type III Sum of Squares	df	Mean Square	F	Sig.
Corrected Model	68,6845(a)	3	22,8948	8,6670	,0004
Intercept	64,6589	1	64,6589	24,4770	,0000
VI	1,2689	1	1,2689	,4803	,4944
PRE_TEST	50,9252	1	50,9252	19,2780	,0002
VI * PRE_TEST	,0109	1	,0109	,0041	,9492
Error	68,6822	26	2,6416
Total	4775,0000	30
Corrected Total	137,3667	29
a R Squared = ,500 (Adjusted R Squared = ,442)

SPSS	OUTPUT 21
Análise da Covariância

Comandos

GET

 FILE='C:\Documents and Settings\user\Desktop\E04_DATA2.sav'.

UNIANOVA

 pos_test BY vi WITH pre_test

 /METHOD = SSTYPE(3)

 /INTERCEPT = INCLUDE

 /CRITERIA = ALPHA(.05)

 /DESIGN = pre_test vi.

Output

Univariate Analysis of Variance

Between-Subjects Factors
		N
VI	1	15
	2	15

Tests of Between-Subjects Effects Dependent Variable: POS_TEST
Source	Type III Sum of Squares	df	Mean Square	F	Sig.
Corrected Model	68,6736(a)	2,0000	34,3368	13,4962	,0001
Intercept	65,1705	1,0000	65,1705	25,6155	,0000
PRE_TEST	51,0402	1,0000	51,0402	20,0615	,0001
VI	21,5550	1,0000	21,5550	8,4723	,0071
Error	68,6931	27,0000	2,5442
Total	4775,0000	30,0000
Corrected Total	137,3667	68,6736	2,0000	34,3368	13,4962
a R Squared = ,500 (Adjusted R Squared = ,463)

SPSS: SYNTAX FILES

Índice de outputs

BASES DE Dados

Última actualização: 2012-09-17