Abstract

This study examines the Buys-Ballot estimates of quadratic trend component and seasonal indices and effect of incomplete data in descriptive time series analysis. This paper is to provide estimates of trend parameters and seasonal indices using Buys-Ballot table with incomplete observations. The methods adopted in this study are 1) Mean imputations 2) Regression imputation 3) Buys-Ballot table for time series decomposition. The methods are based on the row, column and overall means of time series data arranged in Buys-Ballot table with m rows and s columns. The model structure is additive.

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