goodness of fit


Also found in: Dictionary, Thesaurus, Medical, Financial, Acronyms, Wikipedia.

goodness of fit

[¦gu̇d·nəs əv ′fit]
(statistics)
The degree to which the observed frequencies of occurrence of events in an experiment correspond to the probabilities in a model of the experiment. Also known as best fit.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

goodness of fit

the degree to which observations in a data set conform to an expected distribution predicted from a model. See also CHI SQUARE (χ2 ).
Collins Dictionary of Sociology, 3rd ed. © HarperCollins Publishers 2000
Mentioned in ?
References in periodicals archive ?
These can be used to evaluate different models and assign a numerical score to each model based on the goodness of fit to the data and the number of parameters in the model.
Developing a Minimally Structured Mathematical Model of Cancer Treatment with Oncolytic Viruses and Dendritic Cell Injections
Summary results of goodness of fit criteria for data mining algorithms tested for estimating CCW trait are given in Table I.
Estimation of Cold Carcass Weight and Body Weight from Several Body Measurements in Sheep through Various Data Mining Algorithms
On the other hand, Gbangboche, Glele-kakai, Salifou, Albuquerque, and Leroy (2008) compared the goodness of fit of four non-linear growth models in West African Dwarf sheep and concluded that the Brody model provided the best fit.
Comparing non-linear mathematical models to describe growth of different animals/Avaliacao comparativa de modelos matematicos nao lineares para descrever o crescimento animal
Effort based SRGMs are more realistic and result in better goodness of fit. Hence, some SRGMs with testing effort functions were proposed in the past.
Machine Learning Approach for Software Reliability Growth Modeling with Infinite Testing Effort Function
Goodness of fit indexes for the global model and the improved model Fit Index Global Model Measures (All items, all dimensions) [chi square] 909.79 (gl=615, p = 0.000) GFI 0.771 Global AGFI 0.739 RMSEA 0.047 SRMR 0.344 Incremental NNFI 0.992 IFI 0.993 Parsimony [[chi square].sub.N] 1.479 AIC 1085.79 Fit Improved Model Measures (Items I-4, I-5, III-4, III-5, IV-4, IV-7, V-2, V-3) 16.83104 (gl=15, p = 0.329) 0.980 Global 0.953 0.024 0.031 Incremental 0.9992 0.9995 Parsimony 1.122 24.831 Source: Author's own elaboration.
Job satisfaction of Chilean workers. A model of structural equations/Satisfaccion laboral de trabajadores chilenos. Un modelo de ecuaciones estructurales/Satisfaction au travail de travailleurs Chiliens. Un modele d'equations structurelles
Univariate analysis of the nominal variables in acute poisoning treated in medical ICU by Chisquare Goodness of Fit Test (n=92)
ACUTE POISONING TREATED IN MEDICAL INTENSIVE CARE UNIT
Chi-square, SSE and SAE are other relative measures for comparing the goodness of fit performance of estimated distributions models.
PARAMETRIC MODELING OF HOUSEHOLD INCOME DISTRIBUTION IN THE PUNJAB, PAKISTAN
According to Child (2006), three common measures of overall goodness of fit are a chi-square ([chi square]) measure, goodness of fit index (GFI) and root mean square residual (RMR).
Analysis and control of issues that delay pharmaceutical projects
2006).There are several statistics used to determine the goodness of fit. The model with smallest standard error of prediction is assumed to have the best fit to the data and in order that asymptotic weight values offered the best opportunity to make direct comparisons among all models (Brown et al.
Comparison of Growth Curves by Growth Models in SlowGrowing Chicken Genotypes Raised the Organic System
It also explains how to evaluate the goodness of fit of a linear regression model.
Doing Data Analysis with SPSS[R] Version 18.0, 1st edition
Cucej, "A new goodness of fit test for histograms regarding network traffic packet size process", in Proc.
Packet inter-arrival time distribution in academic computer network
In the literature, various methods and criteria are proposed to establish the goodness of fit of a model depending on the type of model.
Effect of repeat purchase and dynamic market size on diffusion of an innovative technological consumer product in a segmented market

Encyclopedia browser ?
Full browser ?