Kelechukwu C.N Dozie

Comparison of the Power of Tests for Detecting Seasonality in Time Series with Linear and Quadratic Trends

Kelechukwu C.N Dozie, Stephen O. Ihekuna & Glory C. Nwagwu · Asian Journal of Advanced Research and Reports · 2026

This paper discusses some tests of seasonality in time series data. The emphasis is to compare the powers of three tests in the detection of the presence seasonal effects in time series data using stimulated example. The parameters of the trending curves (linear and quadratic) ar...

Open access Research Article 10.9734/ajarr/2026/v20i21291

Assessing Performance of Estimation Techniques in Time Series Analysis when Trend-cycle Component is Linear

Kelechukwu C.N Dozie · Asian Journal of Research in Computer Science · 2024

Abstract: Two decomposition techniques are Buys-Ballot and least square techniques are presented in this study. The two important patterns that may be discussed are trend and seasonality and two competing models are additive and multiplicative models. The trend-cycle component is...

Open access Research Article 10.9734/ajrcos/2024/v17i12526