Sharp EL-9900 operation manual Df = However Γs = 0 x s 1 e x dx Df Degree of freedom

Appendix

3 pdfχ2(

2

1

χ2 df2

– 1

(-

χ2

)

f (χ

, df) =

Γ

df

(

2

)

e

2

∞

However: Γ(s) = ∫ 0 xs–1e-xdx

2

( 2

)

4 pdfF(

df: Degree of freedom

Γ (m + n)

m m

– 1(1 + mx )-

m + n

f (x) =

2

( m ) 2

x

2

2

m

n

Γ

n

n

Γ ( 2 )

(

)

However: Γ(s) = ∫ 0∞ xs–1e-xdx

2

m: Degree of freedom of

numerator

n: Degree of freedom of

denominator

5 pdfbin(

P (x = 0) = (1 – p)n

n:

Trial number (integers

P (x = c + 1) =

(n – c) p

P (x = c)

greater than 0)

(c + 1)(1 – p)

p:

Success probability

(c = 0, 1, ..., n – 1)

(0 ≤ p ≤ 1)

c: Success number

6 pdfpoi(

f (x) =

e-∝ ∝x

x!

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

7 pdfgeo(

x: First successful trial number

f (x) = p (1 – p)x - 1

240