# Curve Fitting - Regression Software

**Chemistry
Software Download**

Fitting a curve to an (x,y) data set in the CHEMIX School program is
quite
simple, just insert your x,y data in the Data (x,y) edit field and
select
**Best fit**. By using the **Best fit** option a function
representing
the best correlation will be selected automatically and a curve will be
plotted.
It is also possible to manually select/fit/plot a function -
simply
select a function by clicking on it. Other options in CHEMIX School
are:
**spline interpolation, **calculate** definite integrals**, plot**
derivatives **and the ability to **manipulate data. **By the**
copy
to clipboard **option ,a bitmap of the figure/plot can be pasted
into other
(paste enabled) applications such as word processors etc.
**In CHEMIX School following functions can be fitted
to x,y data**.

Y = A + B*X , Y = A + exp(B*X) , Y=
A*X^B , Y = A
+ B*ln(X) , Y = A/X + B , Y = (A + B*X)/(1 +
C*X)
, Y = A + B*X + C*X^2 (polynome), Y = A
+
B*X + C*X^2 + D*X^3 (polynome)

CHEMIX School also contain a Scientific Calculator, Ternary phase
diagrams
and much more - **Try it**.

You can download CHEMIX School curve fitting - regression software
by clicking
the download link at the top of this page.

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