How did R-square get its name?
139959
Why do some statistics symbols have a "squared", e.g. Variance $\sigma^2$, "R squared" $R^2$ or heritability $H^2$
32282
Why I am getting different $R^2$ from R LM and manual calculation?
107154
History of notation: "!"
37714
Suffixing by "-rama", "-orama" or "-arama" — how did this begin?
58171
Two problems about Squarefree numbers
146222
R-squared is equal to 81% means what?
133514
What is a radius on a square grid?
130851
Squaring the plane, with consecutive integer squares. And a related arrangement
149267
Complete the square on cross terms?
79641
Why are rings called rings?
113549
Can we have a square or triangle or heart or *something* after employees' names?
150624
Why does the square root of a square involve the plus-minus sign?
64674
Intuitive explanation of the inverse square power $\frac{1}{r^2}$ in Newton's law of gravity
98971
Why is $\pi r^2$ the surface of a circle
1591
What does $\mathbb{R} \setminus S$ mean?
13768
Origin of the dot and cross product?
42416
What is the story behind "a-" prefix / suffix?