Statistics

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    On R2 contribution and statistical inference of the change in the hidden and input units of the statistical neural networks
    (Society of African Journal Editors, 2012-11) Udomboso, C. G.; James, T. O.; Odim, M. O.
    Determining the number of liitltlen units for obtaining optimal network performance has been a concern over the years ilespite empirical results showing that with higher neurons, the netivork error is retlucetl. This has led to indiscrimate increase in the hidden neurons, thereby bringing about overfitting. On the other hand, using too few hidden neurons leads to error bias, which can make neural network statistically unfit. In this paper, we developed a model for R1 for investigating changes in hidden and input units, as well as developed tests that can be used in determining the number of hidden and input units to obtain optimal performance. The result of the analyses shows that there is effect on the network model when there is an increase in the number of hidden neurons, as well as the number of input units.
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    Does religion affect alcohol and tobacco use among students at North-West University, South Africa?
    (2017) Amoateng, A. Y.; Setlalentoa, B. M. P.; Udomboso, C.
    The present study used multidimensional measures of religion to asses religion's influence in engedering positive behavioursas measured by alcohol and tobaco use among a sample of undergraduate students at the North-West University in South Africa. Multinomial logistic regression model was used to examine the effect of religion on youth alcohol and tobaco use. Zero-order correlations showed that measures of religion not only correlated positively with each other, but they correlated negatively with both current use of alcohol and tobacco. Religious affiliation was insignificant, but self-related religiosity was positvely associated with drinking among females who reported that they always drink alcohol, frequency of church attendance increased the odds of drinking among females who reported that they never drink compared to those who reported that they drink occasionally. Social class, as measured by father's education was negatively associated with both alcohol and tobacco use. On the whole, religious commitment continues to act as the protective factor against these two anti-social behaviours of teh youth.