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Chapter 14: statistics, Chapter 15: equation solving – Texas Instruments TI-86 User Manual

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TI

-86 Table of Contents

$$TOC.DOC TI-86 TOC, US English Bob Fedorisko Revised: 02/13/01 1:48 PM Printed: 02/13/01 2:59 PM Page x of 10

$$TOC.DOC TI-86 TOC, US English Bob Fedorisko Revised: 02/13/01 1:48 PM Printed: 02/13/01 2:59 PM Page x of 10

The MATRX (Matrix) Menu ...................................................... 178
The MATRX NAMES Menu ....................................................... 178
Creating a Matrix in the Matrix Editor ..................................... 178
The Matrix Editor Menu ........................................................... 179
Creating a Matrix on the Home Screen .................................... 180
Creating a Complex Matrix ...................................................... 180
Displaying Matrix Elements, Rows, and Submatrices............... 181
Using a Matrix in an Expression............................................... 181
Editing Matrices in the Matrix Editor ....................................... 182
Editing Matrices on the Home Screen ...................................... 182
The MATRX MATH Menu ......................................................... 183
The MATRX OPS (Operations) Menu ........................................ 184
The MATRX CPLX (Complex ) Menu......................................... 185

Using Mathematical Functions with Matrices............................... 185

Chapter 14: Statistics

187

Statistical Analysis on the TI

-86.................................................... 188

Setting Up a Statistical Analysis.................................................... 188

The STAT (Statistics) Menu....................................................... 188
Entering Statistical Data........................................................... 189
The LIST NAMES Menu............................................................. 189
The STAT CALC (Calculations) Menu........................................ 189
Automatic Regression Equation Storage .................................. 191

Results of a Statistical Analysis..................................................... 192

The STAT VARS (Statistical Variables) Menu ............................ 192

Plotting Statistical Data.................................................................194

The STAT PLOT Status Screen...................................................194
The STAT PLOT Menu ...............................................................195
Setting Up a Stat Plot ...............................................................195
Turning On and Turning Off a Stat Plot ....................................195
The PLOT TYPE Menu (Selecting a Plot Type)...........................196
Plot Type Characteristics ..........................................................196

The STAT DRAW Menu..................................................................199
Forecasting a Statistical Data Value..............................................199

Chapter 15: Equation Solving

201

Preview: The Equation Solver........................................................202
Entering an Equation in the Equation-Entry Editor........................203
Setting Up the Interactive-Solver Editor ........................................204

Entering Variable Values ..........................................................204
Controlling the Solution with Bounds and a Guess ..................204
Editing the Equation.................................................................205
The Solver Menu.......................................................................206

Solving for the Unknown Variable ................................................206
Graphing the Solution ...................................................................207
Solver Graph Tools ........................................................................207

The Solver ZOOM Menu ...........................................................208

The Simultaneous Equation Solver................................................208

Entering Equations to Solve Simultaneously ............................208
Storing Equation Coefficients and Results to Variables............210

The Polynomial Root-Finder ..........................................................211