Casio FX-9860GII-L-IH User Guide - Page 304
Estimated Value Calculation for Regression Graphs
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6-4-4 Performing Statistical Calculations • Linear Regression ... Σ MSe = 1 n - 2 n i =1 (yi - (axi+ b))2 Σ • Quadratic Regression ... MSe = 1 n - 3 n i =1 (yi - (axi2+ bxi+ c))2 • Cubic Regression ... Σ MSe = 1 n - 4 n i =1 (yi - (axi3+ bxi2+ cxi +d ))2 • Quartic Regression ... Σ MSe = 1 n - 5 n i =1 (yi - (axi4+ bxi3 + cxi2 + dxi + e))2 Σ • Logarithmic Regression ... MSe = 1 n - 2 n i =1 (yi - (a + b ln xi ))2 Σ • Exponential Repression ... MSe = 1 n - 2 n (ln yi - (ln a + bxi ))2 i =1 • Power Regression ... Σ MSe = 1 n - 2 n i =1 (ln yi - (ln a + b ln xi ))2 • Sin Regression ... Σ MSe = 1 n - 2 n (yi - (a sin (bxi i =1 + c) + d ))2 • Logistic Regression ... Σ MSe = 1 n - 2 n i =1 yi - 1 C + ae-bxi 2 u Estimated Value Calculation for Regression Graphs The STAT mode also includes a Y-CAL function that uses regression to calculate the estimated y-value for a particular x-value after graphing a paired-variable statistical regression. The following is the general procedure for using the Y-CAL function. 1. After drawing a regression graph, press !5(G-SLV)1(Y-CAL) to enter the graph selection mode, and then press w. If there are multiple graphs on the display, use f and c to select the graph you want, and then press w. • This causes an x-value input dialog box to appear. 20050401