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Regression

With the given or calculated data, it is possible to create the

Regression and determine the function terms.

Note

(

Feature

)

0.5 1 1.5 2

Number

(

Expression

)

1,58 3,26 4,84 6,38

Regression

Data is given in the list. It is useful, for graphically representing

the data of the regression, e.g. a Scatter graph

(

vgl. Graphical

representation in the Statistics application S.30

)

With CALC

[

]

the Regression type can be selected. For this

example, the linear regression is selected with

[

]

(

)

Note: From the List editor, one can be directed to the Settings window

for regression with

[

]

(

CALC

)

(

without graphical representation!

)

Under SET

([

])

some settings are made:

1Var Xlist / 2Var Xlist: x-value of a one or two dimensional

sample.

1Var Freq / 2Var Freq: Frequency values of a one- or data pairs

of a two dimensional sample.

2Var Ylist: Frequency values of a two dimentional sample.

The entries are conﬁrmed with

[

EXE

]

With REG

([

])

the different regression types can be changed.

Saving the Term

The result can be saved in one of the 20 function memories with

[

]

(

COPY

)

, so that it can be used in other applications

(

Graphic,

RUN-MAT, etc

)

. Select a free space and conﬁrm with

[

EXE

]

Graphing the Regression

The regression is shown graphically with

[

]

(

DRAW

)

Regression

• Regression types: X

(

Linear

)

, x^2

(

Quadratic

)

Exp

(

Exponential

)

, etc.

• Save the Regression function.

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