Obviously, a
principal who steps in when a teacher
is introducing content (Marzano Design Question 2)
is going to find a very different classroom from one in which a teacher
is practicing and deepening knowledge (Marzano Design Question 3), or when students
are generating and
testing hypotheses (Marzano Design Question 4).
It demonstrates that variance ratios
are among the most powerful
tests for detecting mean reversion in stock prices, but that they have little power against the
principal interesting alternatives to the random walk
hypothesis.