HP 48gII hp 48gII_user's manual_English_E_HDPMSG48E67_V2.pdf - Page 584
Obtaining additional summary statistics, By default, the x column is
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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 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-0.58⋅x. Obtaining additional summary statistics The application 4. Summary stats.. in the STAT menu can be useful in some 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: ΣDAT: X-Col, Y-Col: _ΣX _ ΣY...: the matrix containing the data of interest. these options apply only when you have more than two columns in the matrix ΣDAT. By default, the x column is column 1, and the y column is column 2. summary statistics that you can choose as results of this 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 3. Fit data.. Example 1 - For the x-y data currently in ΣDAT, obtain all the summary statistics. Page 18-13
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