To the econometrician bear

Yoyo wondered if there was anything special she could say/do to MM on this Valentine's Day, and she found this poem,

"

You're the apple of my pi
You're the square to my chi
You're the source of my love, shining and nu
And that is why I love mu

-+-

They say that Y equals m-x plus b
(well, when you remove the uncertainty).
So let me reveal a secret confession:
You're the solution to my least squares obsession."

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