This paper presents some tests for seasonality in a time series data which considers the model structure and the nature of trending curve. The tests were applied to the row variances of the Buys Ballot table. The student t-test and Wilcoxon Signed-Ranks test have been recommended for detection of seasonality.
Nwogu, Eleazar Chukwunenye; Iwueze, Iheanyi Sylvester; and Nlebedim, Valentine Uchenna
"Some Tests for Seasonality in Time Series Data,"
Journal of Modern Applied Statistical Methods: Vol. 15
, Article 24.
Available at: http://digitalcommons.wayne.edu/jmasm/vol15/iss2/24