Abstract

The monsoon is affected by factors like wind speed, humidity, and temperature. Outliers can significantly skew the data, and this study presents an outlier detection method using the COVRATIO statistic, derived from the covariance matrix within a simultaneous Linear Functional Relationship Model (LFRM) for linear variables. The cut-off point for the 5% upper percentiles of the maximum value of the COVRATIO statistic is established through a Monte Carlo simulation study. The findings indicate that outliers are detected when the COVRATIO statistic surpasses these cut-off points. The effectiveness of the simultaneous LFRM is demonstrated using Butterworth environmental data, with variables including wind speed, humidity, and temperature. The data
s normality is confirmed by the Kolmogorov-Smirnov test. This research supports the National Policy on Climate Change by contributing to knowledge-based decision-making in climate-related studies, particularly in the domains of environmental monitoring, renewable energy planning, and data analysis.

Details

Title
Butterworth Environmental Dataset: Employing COVRATIO for Outlier Detection with Simultaneous Linear Functional Relationship Model
Author
Nur Ain Al-Hameefatul Jamaliyatul 1 ; Nurkhairany Amyra Mokhtar 1 ; Basri Badyalina 1 ; Rambli, Adzhar 2 ; Zubairi, Yong Zulina 3 

 Mathematical Sciences Studies, College of Computing, Informatics and Mathematics, Universiti Teknologi MARA (UiTM) , Cawangan Johor Kampus Segamat, 85000 Segamat, Johor, Malaysia 
 School of Mathematical Sciences, College of Computing, Informatics and Mathematics, Universiti Teknologi MARA , 40450 Shah Alam, Selangor, Malaysia 
 Institute for Advanced Studies, Universiti Malaya , 50603 Kuala Lumpur, Malaysia 
First page
012004
Publication year
2024
Publication date
Dec 2024
Publisher
IOP Publishing
ISSN
17551307
e-ISSN
17551315
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
3149756037
Copyright
Published under licence by IOP Publishing Ltd. This work is published under https://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.