Casio 3950P User's Guide download pdf (Page 35)

E-33

u Regression coefficient C

u Regression coefficient A

A = – B

(

)

– C

(

)

n

Σy

n

Σx

n

Σx

2

u Regression coefficient B

B = (S

xy

.

S

x

2

x

2

– S

x

2

y

.

S

xx

2

) ÷ {S

xx

.

S

x

2

x

2

– (S

xx

2

)

2

}

(

Σx

)

2

(

Σx

.

Σx

2

)

C

= S

x

2

y

.

S

xx

– S

xy

.

S

xx

2

Sxx

=

Σx

2

– ,

Sxy

=

Σxy

–

Sxx

2

=

Σx

3

– ,

Sx

2

x

2

=

Σx

4

–

Sx

2

y

=

Σx

2

y

–

n

n

(

Σx

2

)

2

n

n

(

Σx

2

.

Σy

)

n

(

Σx

.

Σy

)

5 Inverse Regression y = A + B

ⴢ

1

/x

u Correlation coefficient

r

u Regression coefficient A

A =

n

Σy

–

B

.

Σx

–1

u Regression coefficient B

B =

Sxx

Sxy

r

=

Sxx

=

Σ

(

x

–1

)

2

–

,

Syy

=

Σy

2

–

Sxy

=

Σ

(

x

–1

)

y

–

Sxx

.

Syy

Sxy

n

(

Σx

–1

)

2

n

Σx

–1

.

Σy

n

(

Σy

)

2

6 Quadratic Regression y = A + Bx + Cx

2

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