evaluation of the Halloween effect on  the US stock market and its counterparts  

萬聖節效應對美國股市以及

in other developed markets such as the  UK, France, Canada, Germany, and Japan.

英國、法國、加拿大、德國和日本等其他已開發市場的影響的歷史評估。

Utilizing various statistical techniques,  including average analysis, Student's t-test,  

該研究 利用各種統計技術，包括平均值分析、學生 t 檢定、

ANOVA, and the Mann-Whitney test, alongside  a trading simulation approach, the research  

變異數分析和曼惠特尼檢驗，以及交易模擬方法，

investigates the evolution of the Halloween  Effect. The findings are quite intriguing.

調查了萬聖節效應的演變。研究結果非常有趣。

In the US stock market and  other developed markets,  

在美國股市和其他已開發市場，

the Halloween effect was only noticeable  starting from the middle of the 20th century.

萬聖節效應從20世紀中葉才開始明顯。

This means that, for a  significant period in history,  

這意味著，在歷史上一個重要的時期，

there was no discernible pattern linked  to Halloween in stock market trends.

股市趨勢中沒有與萬聖節相關的明顯模式。

More recent data, however, suggests  that the Halloween effect is still  

然而，最近的數據表明，萬聖節效應仍然

present in the US stock market as well as  in most of the other developed markets.

存在於美國股市以及大多數其他已開發市場。