Lyrics copyright by Heather Nichols
may be sung to the tune of the traditional Scottish Gaelic tune, "Bunessan".
Randomization
Reduces bias
Controls for confounding variables
Establishes cause and effect
Creates comparable treatment groups
And in a random sample
We can generalize our findings
To its population.
Lyrics and music ©2025 by Heather Nichols
Blocking reduces variability
Within treatment variability on the response variable
Creates similar groups to see
How they respond differently
To the treatments in the experiment.
Q. Why is the flu vaccine like a good experiment?
A. Both are designed to control variants (variance).
Larry Lesser & Dennis Pearl
by Larry Lesser
The ends of lines
Are grouped by rhymes;
Within each pair,
Two treatments shared.
If something lurks,
This plan still works,
But it takes time
To match the lines
And if one leaves….