HP HP-20S - Statistical Formulas

Statistical Formulas
Lo 3 o _ 3y o _ Zmy
n n v 2y
2X)
22_(
S, = * n
n—1
T/ Zy)’ 22_(
S, = Y n
n—1
Exy_ExEy
m = n
ExZ_@LZ
n
b =79y—mx 52=~1Ln_1—?— y=mx+b
ny_ExEy
n
r:
\/<2x2 _ (Zx)2)<2y2 __ (zyf)
n n
60 5: Statistical Calculations