Sharp EL-9900 User Manual

Page 250

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background image

240

Appendix

3 pdf

χ

2

(

f (

χ

2

, df) =

df

2

2

Γ ( )

df

2

1

χ

2

2

e

(

-

)

χ

2

2

( )

1

4 pdfF(

f (x) =

( )

m

2

m

+

n

2

m

+

n

2

Γ ( )

n
2

Γ ( )

Γ ( )

m

n

(1

+

)

mx

n

x

1

m

2

m

2

-

5 pdfbin(

P (x = 0) = (1

p)

n

P (x = c

+

1) =

P (x = c)

(n

c) p

(c

+

1)(1

p)

(c = 0, 1, ..., n

1)

6 pdfpoi(

f (x) =

e

-

µ

µ

x

x!

(x = 0, 1, 2, ...)

7 pdfgeo(

f (x) = p (1

p)

x

-

1

df: Degree of freedom

m: Degree of freedom of

numerator

n: Degree of freedom of

denominator

n: Trial number (integers

greater than 0)

p: Success probability

(0

≤ p ≤ 1)

c: Success number

x: First successful trial number

However:

Γ(s) = ∫


0

x

s

1

e

-

x

dx

However:

Γ(s) = ∫


0

x

s

1

e

-

x

dx

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