# Statistical Package For Social Sciences

1192 WordsMay 19, 20175 Pages
4.4.3 Regression Analysis In this study, a multiple regression analysis was applied to test the influence among predictor variables. The research used statistical package for social sciences (SPSS V 20) to code, enter and compute the measurements of the multiple regressions. Table 11, Regression Analysis Model Summary Model R R Square Adjusted R Square Std. Error of the Estimate 1 .789a .623 .616 .48825 a. Predictors: (Constant), staff skill, documentation, funding, procurement procedure Source: own spss computation, 2017 As shown to the results in the summarized Table 11 above, Coefficient of determination explains the extent to which changes in the dependent variable can be explained by the change in the independent variables or the…show more content…
Table 13, Coefficient of determination Model Unstandardized Coefficients Standardized Coefficients T Sig. B Std. Error Beta 1 (Constant) -1.381 .239 -5.769 .000 Procurement procedure .168 .075 .130 2.229 .027 Fund .389 .060 .359 6.520 .000 Staff skill .636 .106 .287 5.984 .000 Documentation .304 .064 .255 4.738 .000 a. Dependent Variable: inventory Source: own spss computation, 2017 According to the finding in the above table the regression equation was Y = -1.381+ 0.168 X1 + 0.389 X2+ 0.636X3 + 0.304X4 Where Y is the dependent variable (effectiveness of inventory management), X1 is procurement procedure, X2 is Funding, X3 is the staff skill X4 is Documentation. The strength of each predictor (independent) variable influence on the dependent variable can be investigated via standardized Beta coefficient. Hence, the regression coefficient explain the average amount of change in dependent variable that caused by a unit of change in the independent variable. Therefore, as shown the table above fund is the most contributing factor in the prediction of effectiveness of inventory management in Este woreda public sector with beta value 0.359 followed by a staff skill with the beta value of 0.287. The other two predictors, in their descending order of standardized coefficients, documentation (B=0.255) and procurement procedure (B=0.130) that the variables are