Home

2025上网科学工具app

Calendar effects (sometimes less accurately described as ‘seasonal effects’) are cyclical anomalies in returns, where the cycle is based on the calendar. The most important calendar anomalies are the January effect and the weekend effect. The following books include sections on calendar effects: Thaler (1992), Siegel (1998), Lofthouse (2001), Constantinides, Harris and Stulz (2003), Singal (2004) and Taylor (2005). Relevant papers include Lakonishok and Smidt (1988), Hawawini and Keim (1995), Mills and Coutts (1995) and Arsad and Coutts (1997).

Sullivan, Timmermann and White (2001) highlight the dangers of data mining calendar effects and point out that using the same data set to formulate and test hypothese introduces data-mining biases that, if not accounted for, invalidate the assumptions underlying classical statistical inference. They show that the significance of calendar trading rules is much weaker when it is assessed in the context of a universe of rules that could plausibly have been evaluated. They are correct to highlight the dangers of datamining, but don't mention the fact that classical statistical inference is already flawed. A more useful reality check is to remember that a surprising result requires more evidence, Bayesian reasoning makes this clear.
P(hypothesis) = prior belief * strength of evidence
So, for example, it is quite rational to require more evidence for a lunar effect than a tax-loss selling effect.

Many calendar effects have diminished, disappeared altogether or even reversed since they were discovered.

2025上网科学工具app

2025上网科学工具app

云云云加速器破解版,云云云加速器官网网址,云云云加速器ios下载,云云云加速器vps  云云云加速器官网网址,云云云加速器ios下载,云云云加速器npv,云云云加速器vps  兔子加速器,猴王加速器,山羊goat加速器,鹰眼加速器  茄子加速器破解版,茄子加速器官方网址,茄子加速器vqn,茄子加速器vn  长沙去海南飞机票多少钱一张,南京去海南飞机票多少钱一张,海南飞机票多少钱,郑州去海南飞机票多少钱一张  苹果加速器ios下载,飞机加速器npv怎么用,飞机加速器下载,飞机加速器下载安卓