beautypg.com

Casio FX-CG10 User Manual

Page 218

background image

6-25

• Power Regression ..........................

• Sin Regression ...............................

• Logistic Regression ........................

u Estimated Value Calculation for Regression Graphs

The Statistics mode also includes a Y-CAL function that uses regression to calculate the
estimated

y

-value for a particular

x

-value after graphing a paired-variable statistical

regression.

The following is the general procedure for using the Y-CAL function.

1. After drawing a regression graph, press

!5(G-SOLVE) 1(Y-CAL) to enter the graph

selection mode, and then press

w.

If there are multiple graphs on the display, use

f and c to select the graph you want,

and then press

w.

• This causes an

x

-value input dialog box to appear.

2. Input the value you want for

x

and then press

w.

• This causes the coordinates for

x

and

y

to appear at

the bottom of the display, and moves the pointer to the
corresponding point on the graph.

3. Pressing

v or a number key at this time causes the

x

-value input dialog box to reappear

so you can perform another estimated value calculation if you want.

• The pointer does not appear if the calculated coordinates are not within the display range.

• The coordinates do not appear if “Off” is specified for the “Coord” item of the Setup screen.

MSe

=

Σ

1

n

– 2

i

=1

n

(ln y

i

– (ln a + b ln x

i

))

2

MSe

=

Σ

1

n

– 2

i

=1

n

(ln y

i

– (ln a + b ln x

i

))

2

MSe

=

Σ

1

n

– 2

i

=1

n

(y

i

– (a sin (bx

i

+ c) + d ))

2

MSe

=

Σ

1

n

– 2

i

=1

n

(y

i

– (a sin (bx

i

+ c) + d ))

2

MSe

=

Σ

1

n

– 2

1 + ae

bx

i

C

i

=1

n

y

i

2

MSe

=

Σ

1

n

– 2

1 + ae

bx

i

C

i

=1

n

y

i

2

This manual is related to the following products: