the program CRMC developed in Chapter 10. Next, save this matrix into the
statistical matrix ΣDAT, by using function STOΣ.
Finally, launch the data fit application by using: ‚Ù˜˜@@@OK@@@ . The
display shows the current ΣDAT, already loaded. Change your set up screen
to the following parameters if needed:
Press @@@OK@@@, to get:
1: '3.99504833324*EXP(-.579206831203*X)'
2: Correlation: -0.996624999526
3: Covariance: -6.23350666124
The best fit for the data is, therefore, y = 3.995 e
Obtaining additional summary statistics
The application 4.
Summary stats..
calculations for sample statistics. To get started, press ‚Ù once more,
move to the fourth option using the down-arrow key ˜, and press @@@OK@@@.
The resulting input form contains the following fields:
the matrix containing the data of interest.
ΣDAT:
these options apply only when you have more than two
X-Col, Y-Col:
columns in the matrix ΣDAT.
column 1, and the y column is column 2.
:
summary statistics that you can choose as results of this
_ΣX _ ΣY...
program by checking the appropriate field using [ CHK]
when that field is selected.
Many of these summary statistics are used to calculate statistics of two
variables (x,y) that may be related by a function y = f(x). Therefore, this
program can be thought off as a companion to program
Example 1 – For the x-y data currently in ΣDAT, obtain all the summary
statistics.
⋅
-0.58
x
.
in the STAT menu can be useful in some
By default, the x column is
3. Fit data..
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