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Cheat sheet for statistics to learn the formulas
Typology: Cheat Sheet
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n
X f
n
n
i
i i
n
i
1 1
c
f
n K
i
i
K
1
inf
k
c a h
t
c
f
n K
i
i
K
1
inf
c
f
n K
i
i
K
1
inf
n se n
se n
90 10
3 1
a
f f f
f f
Mo X L
mo a p
mo a
i
c
f f
f
ant post
post
o
inf
𝑘 = 1 + 3 , 3 × log(𝑛)
max min
t
1
2
2
n
X X f
n
i
i i
1
2
n
X X f
n
i
i i
s
2 2
1
n X ( X)
n XY X Y
90 10
3 1
a YbX
2 2 2
2
i i i i
i i i i
xy
n X X n Y Y
n XY X Y
∑
మ
∑
ି ∑
∑
∑
మ
ି (∑
)
మ
i
Mediana : n -impar:
2
1
n
Med X n –par
2
2
2
n n
Med Ponto Medio:
2
i s
i
L L
X
ூ
ூାଵ
ூ
ூାଵ
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ூାଵ
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