Lyric © 2015 by Lawrence Mark Lesser
may sing to tune of "Twinkle, Twinkle, Little Star"
How do shoe length values go
When height is high or when it's low?
Like horses on a merry-go-round
When they're both up or they're both down,
This provides an illustration of a positive correlation!
How do used car prices go
When mileage is high or low?
Like horses on a merry-go-round
Where one is up when the other's down,
This provides an illustration of a negative correlation!
How do weights of people go
When IQ score is high or low?
Wild horses on a merry-go-round:
No pattern to the up or down.
This is an illustration of zero correlation!