Texas Instruments TI-82 User Manual - Page 167
Statistical Analysis
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Statistical Analysis Pressing ... ~ accesses the STAT CALC menu, where you set up and perform statistical calculations. The TI.82 can analyze one-variable or two-variable statistics. Both can have associated frequencies. STAT CALC Menu EDIT CALC 1: 1-Var Stats 2: 2-Var Stats 3: SetUp... 4: Med-Med 5: LinReg(ax+b) 6: QuadReg 7: CubicReg 8: QuartReg 9: LinReg(a+bx) 0: LnReg A: ExpReg B: PwrReg Calculates 1-variable statistics. Calculates 2-variable statistics. Defines lists to use in calculations. Calculates median-median line. Fits data to linear model. Fits data to quadratic model. Fits data to cubic model. Fits data to quartic model. Fits data to linear model. Fits data to logarithmic model. Fits data to exponential model. Fits data to power model. SET UP CALCS Screen When you select SetUp..., the SET UP CALCS screen appears, where you can define a statistical analysis. ¦ 1-Var Stats (one-variable statistics) analyzes data with one measured variable. ¦ 2-Var Stats (two-variable statistics) analyzes paired data between which there is a relationship. Xlist is the independent variable. Ylist is the dependent variable. ¦ Freq (frequency of occurrence) is a list of integers between 0 and 99 (inclusive). Freq is optional; the default is 1. It is valid for one-variable or two-variable statistics. Note: You can override SET UP CALCS settings by specifying the name(s) of the list(s) after the statistical calculation instruction (Appendix A). Changing Settings To change a setting on the SET UP CALCS screen, use †, }, ~, and | to position the cursor and then press Í. Statistics 12-13