Casio CFX-9800G-w Owners Manual - Page 71
Eider, Eeditaerseyes
UPC - 079767128685
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MPowerRegmssion The power regression formula is defined as y = A-x2 (Iny=lnA+ Blnx). • To input data for power regression Input data using the same procedures as described for linear regression on page 104. • To delete data Delete data using the same procedures as described for linear regression on page 104. The following shows the difference between linear regression results and power regression results. Linear Regression Power Regression Ex £Inx Ex2 E(Inx)2 Ey Elny Ey2 E(Iny)2 Exy £Inxdny •To Enter the Regression Mode with Data Storage Highlight the REG icon on the Main Menu and then press El. Press E(SET) to make the set up display appear. Next, use the procedure on page 24 to specify the type of regression you want to perform. I LINrI33-hEIMM • EIDER Use the procedure on page 23 specify STO for the statistical data (S-data). H06- Press EMI, and the paired-variable statistical.menu appears on the display. *This is the display that appears after you select linear (LIN) regression. -RUN / LIN-REG S-data :STO S7graph:NON8-plot :ORANGE G-type :REC/CON Angle . :Dea DisplaSP:Nrml - 1: 1FFICIIEREP IDEEJECIE The following are the operations that are available from the functioridisplay at the bottom of the screen. Press the function key below the operation you want to perform. E(DT) Inputs data E(EDIT) Displays an edit function menu E(,) Po (DEV) Inputs comma between x- and y-data Statistical menu E(E) Sum data menu E(REG) Regression/estimated value menu •Ex2, £x, n, Ey2, Ey, and Exy data are stored in their own memory area, and so they do not use value memories. • To input data The following input procedures can be used to input data for linear, logarithmic, exponential, and power regression. Example 1 To input the data 10/20, 20/30, 20/30, 40/50 Before actually beginning data input, use the following sequence to delete any statistical data stored in memory. E(EDIT)a(ERS)E(YES) 10E(,)20E(DT) 20E(,)30E(DT)E(DT) 40E(,)50E(DT) Example 2 To input the data 10/20, 20/30, 20/30, 20/30, 20/30, 20/30, 40/50 10E(,)201:1(DT) 20E(,)30(=IMSE(DT) 40O(,)50 Fr Note that you can input multiple data pairs by entering the data, pressing and then entering the number of data pairs. • To edit data To change, delete, insert, or clear data, press E(EDIT) to display the edit function menu and then perform the same procedures as those described for single-variable data on • pages 99 to 101. -107-