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Table 5 Goodness of fit index (GFI) for the proficiency Model

From: A study of the proficiency and performance of Iranian Air Traffic Controllers: attitude, work experience and specific aviation English courses

Fitting Index

Desirable amount

Result

/df2χ

3.00>

1.747

GFI(goodness of fit index)

0.90<

0.990

RMSE(Root Mean Squared error)

0.08>

0.053

IFI )Incremental Fit Index (

0.90<

0.986

NFI(Normed Fit Index)

0.90<

0.968

CFI(Comparative Fit Index)

0.90<

0.986