Texas Instruments TI-84 PLUS - Graphing Calculator User Manual

Name: Texas Instruments TI-84 PLUS - Graphing Calculator
Brand: Texas Instruments
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Chapter 11: Lists 177

stdDev(list[,freqlist])

MathPrint™

Classic

variance( returns the variance of the elements in list. The default value for freqlist is 1. Each freqlist

element counts the number of consecutive occurrences of the corresponding element in

list.

Complex lists are not valid.

variance(list[,freqlist])

MathPrint™

Classic

Default Chapter2
- Important Information2
- Table of Contents3
Chapter 1 Operating the TI-84 Plus Silver Edition8
- Documentation Conventions8
- TI-84 Plus Keyboard8
- Turning on and Turning off the TI-84 Plus10
- Setting the Display Contrast11
- The Display12
- Interchangeable Faceplates15
- Using the Clock16
- Interchangeable Faceplates16
- Entering Expressions and Instructions18
- Setting Modes21
- Using TI-84 Plus Variable Names26
- Storing Variable Values27
- Recalling Variable Values28
- Scrolling through Previous Entries on the Home Screen29
- ENTRY (Last Entry) Storage Area29
- TI-84 Plus Menus32
- VARS and VARS Y-VARS Menus34
- Equation Operating System (EOS™)36
- Special Features of the TI-84 Plus37
- Other TI-84 Plus Features38
- Error Conditions40
Chapter 2 Math, Angle, and Test Operations42
- Getting Started: Coin Flip42
- Keyboard Math Operations43
- MATH Operations45
- Using the Equation Solver49
- MATH NUM (Number) Operations52
- Entering and Using Complex Numbers57
- MATH CPX (Complex) Operations61
- MATH PRB (Probability) Operations63
- ANGLE Operations66
- TEST (Relational) Operations69
- TEST LOGIC (Boolean) Operations70
Chapter 3: Function Graphing72
- Getting Started: Graphing a Circle72
- Defining Graphs73
- Setting the Graph Modes74
- Defining Functions75
- Selecting and Deselecting Functions76
- Setting Graph Styles for Functions78
- Setting the Viewing Window Variables80
- Setting the Graph Format81
- Displaying Graphs83
- Exploring Graphs with the Free-Moving Cursor85
- Exploring Graphs with TRACE85
- Exploring Graphs with the ZOOM Instructions87
- Using ZOOM MEMORY92
- Using the CALC (Calculate) Operations94
Chapter 4 Parametric Graphing98
- Getting Started: Path of a Ball98
- Defining and Displaying Parametric Graphs100
- Exploring Parametric Graphs102
Chapter 5: Polar Graphing104
- Getting Started: Polar Rose104
- Defining and Displaying Polar Graphs105
- Exploring Polar Graphs107
Chapter 6: Sequence Graphing109
- Getting Started: Forest and Trees109
- Defining and Displaying Sequence Graphs110
- Selecting Axes Combinations114
- Exploring Sequence Graphs114
- Graphing Web Plots116
- Using Web Plots to Illustrate Convergence117
- Graphing Phase Plots118
- Comparing TI-84 Plus and TI-82 Sequence Variables120
- Keystroke Differences between TI-84 Plus121
- And TI-82121
Chapter 7: Tables122
- Getting Started: Roots of a Function122
- Setting up the Table123
- Defining the Dependent Variables124
- Displaying the Table125
Chapter 8: Draw Instructions128
- Getting Started: Drawing a Tangent Line128
- Using the DRAW Menu129
- Clearing Drawings130
- Drawing Line Segments131
- Drawing Horizontal and Vertical Lines132
- Drawing Tangent Lines133
- Drawing Functions and Inverses134
- Shading Areas on a Graph135
- Drawing Circles135
- Placing Text on a Graph136
- Using Pen to Draw on a Graph137
- Drawing Points on a Graph138
- Drawing Pixels139
- Storing Graph Pictures (Pic)141
- Recalling Graph Pictures (Pic)142
- Storing Graph Databases (GDB)142
- Recalling Graph Databases (GDB)143
Chapter 9: Split Screen144
- Getting Started: Exploring the Unit Circle144
- Using Split Screen145
- Horiz (Horizontal) Split Screen146
- G-T (Graph-Table) Split Screen147
- TI-84 Plus Pixels in Horiz and G-T Modes148
Chapter 10: Matrices150
- Getting Started: Using the MTRX Shortcut Menu150
- Getting Started: Systems of Linear Equations151
- Defining a Matrix152
- Viewing and Editing Matrix Elements153
- Using Matrices with Expressions155
- Displaying and Copying Matrices156
- Using Math Functions with Matrices158
- Using the MATRX MATH Operations161
Chapter 11: Lists168
- Getting Started: Generating a Sequence168
- Naming Lists169
- Storing and Displaying Lists170
- Entering List Names171
- Attaching Formulas to List Names172
- Using Lists in Expressions174
- LIST OPS Menu175
- LIST MATH Menu182
Chapter 12: Statistics185
- Getting Started: Pendulum Lengths and Periods185
- Setting up Statistical Analyses191
- Using the Stat List Editor192
- Attaching Formulas to List Names195
- Detaching Formulas from List Names197
- Switching Stat List Editor Contexts197
- Stat List Editor Contexts199
- STAT EDIT Menu200
- Regression Model Features202
- STAT CALC Menu205
- Statistical Variables213
- Statistical Analysis in a Program214
- Statistical Plotting215
- Statistical Plotting in a Program219
Chapter 13 Inferential Statistics and Distributions222
- Getting Started: Mean Height of a Population222
- Inferential Stat Editors225
- STAT TESTS Menu228
- Inferential Statistics Input Descriptions246
- Test and Interval Output Variables247
- Distribution Functions248
- Distribution Shading255
Chapter 14: Applications258
- The Applications Menu258
- Getting Started: Financing a Car259
- Getting Started: Computing Compound Interest260
- Using the TVM Solver260
- Using the Financial Functions261
- Calculating Time Value of Money (TVM)262
- Calculating Cash Flows264
- Calculating Amortization265
- Calculating Interest Conversion268
- Finding Days between Dates/Defining Payment Method268
- Using the TVM Variables269
- The Easydata™ Application270
Chapter 15 CATALOG, Strings, Hyperbolic Functions273
- Browsing the TI-84 Plus CATALOG273
- Entering and Using Strings274
- Storing Strings to String Variables275
- String Functions and Instructions in the CATALOG276
- Hyperbolic Functions in the CATALOG280
Chapter 16: Programming282
- Getting Started: Volume of a Cylinder282
- Creating and Deleting Programs283
- Entering Command Lines and Executing Programs285
- Editing Programs286
- Copying and Renaming Programs287
- PRGM CTL (Control) Instructions288
- PRGM I/O (Input/Output) Instructions295
- Calling Other Programs as Subroutines300
- Running an Assembly Language Program301
Chapter 17: Activities303
- The Quadratic Formula303
- Box with Lid306
- Comparing Test Results Using Box Plots313
- Graphing Piecewise Functions315
- Graphing Inequalities316
- Solving a System of Nonlinear Equations317
- Using a Program to Create the Sierpinski Triangle318
- Graphing Cobweb Attractors319
- Using a Program to Guess the Coefficients320
- Graphing the Unit Circle and Trigonometric Curves322
- Finding the Area between Curves323
- Using Parametric Equations: Ferris Wheel Problem324
- Demonstrating the Fundamental Theorem of Calculus326
- Computing Areas of Regular N-Sided Polygons328
- Computing and Graphing Mortgage Payments330
Chapter 18 Memory and Variable Management333
- Checking Available Memory333
- Deleting Items from Memory336
- Clearing Entries and List Elements336
- Archiving and Unarchiving Variables337
- Resetting the TI-84 Plus340
- Grouping and Ungrouping Variables343
- Garbage Collection346
- ERR:ARCHIVE FULL Message350
Chapter 19: Communication Link351
- Getting Started: Sending Variables351
- TI-84 Plus LINK352
- Selecting Items to Send354
- Receiving Items357
- Backing up RAM Memory358
- Error Conditions359
Appendix A361
- Functions and Instructions361
- Appendix B: Reference Information390
Appendix C: Service and Warranty Information407
- Texas Instruments Support and Service407
- Battery Information407
- In Case of Difficulty409

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Texas Instruments TI-84 PLUS - Graphing Calculator Specifications

General

Type	Graphing Calculator
Display Type	LCD
Screen Resolution	96 x 64 pixels
Processor	Zilog Z80
Memory	24 KB RAM, 480 KB Flash ROM
Power Source	4 AAA batteries (with backup lithium battery)
Connectivity	I/O port
Weight	7.4 oz (210 g)
Software	TI-OS (Texas Instruments Operating System)