Extrapolation and
interpolation.
A **"Calculator"** tab of the control panel
permits to calculate interpolated or extrapolated values for the active
statistical scheme and formulas.
Typed into **"Argument(s)"** edit control numerical values of arguments
(if their have to be more then one for any particular scheme do separate them
with space or comma letters). Push button **"Ok"** or press Enter key to
calculate extrapolated or interpolated values for the active statistical scheme.
For example for the curve fitting the value(s) on the theoretical curve(s) for
the impute argument all values visible curves will be calculated. Note
that only difference between interpolation and extrapolation is that first
calculation is made for arguments inside of area covered with experimental data
and extrapolation for outside range of tested values and meant to be used for
prediction. As a matter of calculation procedures both of them absolute
equivalent..
In case if mistakenly input of non-corresponding to the formula number of
arguments the corresponding **"mistake message"** will appear instead of
numerical result.
LeoStatistic software application can calculate extrapolation also for series
of theoretical values for arguments that has to be presented in the text (ANSI)
file, one record per line with parameters divided by separator letters) (in the
same format as used for import data).
To calculate series of theoretical values user at first has to create a file
that contains arguments and then press button **"Browse"** associated with
edit control **"From file"** to select it in the operation system of the
computer. In the appeared dialog box to chose exact number fields as
number of arguments as is in existing statistical scheme and press button**
"Ok"** or keyboard**
"Enter"** key. LeoStatistic will calculate theoretical values for each
statistical scheme (formula) and write them in the output text file that must be
selected in se same manner as input one. . The name of the output file can be
edited in the**
"To file"** edit box. Initially LeoStatistic software application will offer
to create an output file with the name repeating of input file plus** "_Res"**
before
**",txt"** extension. For example for **"myFile.txt" **default output name
is
**"myFile_Res.txt"**.
A result file will copy a content of input file plus add one field of
extrapolated values. In case of more then one statistical scheme
(theoretical curves for the case of one argument for example) this will be
repeated for each curve.
Data modeling. There is also an option to sort of the results in
the ascending (descending) order. One of the possible usage of this option is a
data modeling for finding most statistically promising objects.
For example for the market research the problem can be formulated to find most
prospective customers on the base behavior of the existing. Let's presume that
we have an file that contains information about customers like their age,
gender, income, family size considered as arguments and value of their spending
on our products. Importing this file to the LeoStatistic we probably will find a
pronounced correlation between all o some of parameters of customers and their
spending level.
If we have also a file contains a analogues information about potential
customers. Using described above procedure we will obtaining file potential
customers ranged by their potential willing to spend more money baying our
product. Other approach to this marketing problem is described in the
page marketing. |