Casio ALGEBRA FX2.0 Owner's Manual

STAT 2
(Advanced Statistics Application)

Statistical Calculation (STAT) Soft­ware for the ALGEBRA FX2.0

1. Modifications Made to ALGEBRA 2.0 by STAT2

2. Tests

3. Confidence Interval

4. Distribution

2

MSE =

Σ

1

n – 4

i=1

n

(yi – (ax

i

3

+ bx

i

+ cx

i

+d ))

2

2

MSE =

Σ

1

n – 5

i=1

n

(yi – (ax

i

4

+ bx

i3

+ cx

i

+ dx

i

+ e))

2

2

1.Modifications Made to ALGEBRA 2.0 by STAT2

uu

uChanges to the Function Menu

uu

Installing STAT2 changes the function menu of the STAT Mode list input screen (initial
screen) as shown below.

Pressing a function key that corresponds to the added item displays a menu that lets you
select one of the functions listed below.

• 3(TEST) ... Test (Chapter 2, page 6)

• 4(INTR) ... Confidence interval (Chapter 3, page 31)

• 5(DIST) ... Distribution (Chapter 4, page 42)

The SORT and JUMP functions available with ALGEBRA FX2.0 are moved to the TOOL
menu (6 and 1) by STAT2.

uu

uCalculation of the Coefficient of Determination (r2) and MSE

uu

STAT2 adds calculation of the coefficient of determination (r2) for quadratic regression, cubic
regression, and quartic regression. The following types of MSE calculations are also added
for each type of regression.

• Linear Regression ...

• Quadratic Regression ...

MSE =

MSE =

1

n – 2

1

n – 3

(yi – (axi+ b))

Σ

i=1

n

(yi – (ax

Σ

i=1

2

2

i

+ bxi+ c))

2

n

• Cubic Regression ...

• Quartic Regression ...

n

• Logarithmic Regression ...

MSE =

1

n – 2

(yi – (a + b ln xi ))

Σ

i=1

2