Since the day-of-the-week effect was identified in the early 1980s, the effect has:
A) increased significantly.
B) increased slightly.
C) remained relatively constant.
D) diminished somewhat.
E) disappeared.

Question

Quizplus · Accepted Answer

Over the years, the day-of-the-week effect has diminished somewhat, as markets have become more efficient and automated trading has increased.

Since the Day-Of-The-Week Effect Was Identified in the Early 1980s