Parametric and Nonparametric Regression Modeling for Oil Sectors Stock Prices Time Series Data

Manikandan B.¹ , Rajarathinam A.²

Section:Research Paper, Product Type: Isroset-Journal
Vol.6 , Issue.3 , pp.49-54, Jun-2019

CrossRef-DOI:   https://doi.org/10.26438/ijsrmss/v6i3.4954

Online published on Jun 30, 2019

Copyright © Manikandan B. , Rajarathinam A. . This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
 

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Abstract :
The present investigation is carried out to study the trends in different oil sectors viz., Indian Oil Corporation, Bharat Petroleum and Hindustan Petroleum, stock prices time series data based on parametric and nonparametric regression models. In parametric models different linear models are employed. The statistically most suited parametric models are selected on the basis of highest adjusted R2, significant regression co-efficient and co-efficient of determination (R2), assumptions of normality and independence of residuals. The best fitted model is selected based on the model performance measures such as, Root Mean Square Error, Mean Absolute Error, and Mean Absolute Percentage Error. Nonparametric estimates of underlying growth functions are computed at each and every time points. Relative growth rates are estimated based on the best fitted trend function. In this study none of the parametric models are found suitable to study the trend. Nonparametric regression is found an appropriate tool to study the trends. Decreases in trends with no significant jump have been observed. The mean growth rate is high for Bharat Petroleum Corporation Limited in comparison to that of Hindustan Petroleum Corporation Limited and Indian Oil Corporation.

Key-Words / Index Term :
Parametric model, Nonparametric, Kernel Smoothers, Band width, Cross–validation

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