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Aritmetika
Un = a(n-1b)
Sn = 1 (2at (n-1b)
b= V₂-U₁
a = U₁ = S₁
Geometri
Un = α (1-r") r<1 \ Trik - kurang dari 1, r nya
1-r
Sn = a(n-1) r>1
1-1
tenggelam berarti air
n' = b
k+1
b' = n + (n-1) k
Prinsip Sisipan: Jari Tangan
Ut = 1 (at Un)
Soo = a
1-r
r = U₂
U₁
2
Statistik Regresi
ŷ - y = Sxy (x-x)
Sx²
ý - 5 = SSxy (x-x)
r =
SSxy
SSx
√√SSxx SSy
=
Σxy-nxy
√Ex²-nx² √Zy²-ny¹
koefisien determinasi: r² × 100%
Sxy = Σxy - xg
n
Sx² = x² - x²
n
SSxy = Σxy-nxy
SSxx = x²-nx²
SSyy = Σy¹-ng²
X = Ex
n
Y = ZY
n
ŷ = mx + c
residu y-ĝ