Page 62 - Azerbaijan State University of Economics

THE JOURNAL OF ECONOMIC SCIENCES: THEORY AND PRACTICE, V.76, # 1, 2019, pp. 48-69

Calculated
School Value 0.559 0.429 0.690 26.225
Climate Corrected Below 1 0.496 0.350 0.642 43.384
Value Average

When we take a look at Duv al and Tweedie’s trim and fill method, the results show
that there are no missing studies according to the random effects model for the
symmetry to be completed in the funnel graph according to the leadership
independent variable. In terms of the school climate independent variable, a single
study is missing lower than the effect size (on the left side of the average line in the
funnel graph). If this missing study is included in this study, the effect size drops to
0.496 and the Q value drops to 43.384. In addition, the funnel scatter graph created
in line with these results is given below.

Graph 3: Duval and Tweedie’s Trim and Fill funnel Scatter Graph for the
Publication Partiality of the Studies whose Effect Sizes have been Calculated based
on the Relationship between School Effectiveness and Leadership

Funnel Plot of Standard Error by Fisher's Z
0,00

0,05

Standard Error 0,10

0,15

0,20

-2,0 -1,5 -1,0 -0,5 0,0 0,5 1,0 1,5 2,0
Fisher's Z

As it can be seen in the funnel scatter graph, there is no missing study which upsets
the symmetry according to Duval and Tweedie’s Trim and Fill analysis for the
leadership independent variable. In this respect, it can be stated that there is no
publication partiality according to the results of this analysis.

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