User's Manual
Table Of Contents
- Manual conventions
- Notice
- On/off, cancel operations
- The display
- The keyboard
- Menus
- Input forms
- Mode settings
- Aplets (E-lessons)
- Mathematical calculations
- Where to start
- Entering expressions
- Long results
- Negative numbers
- Scientific notation (powers of 10)
- Explicit and implicit multiplication
- Parentheses
- Algebraic precedence order of evaluation
- Largest and smallest numbers
- Clearing numbers
- Using previous results
- Storing a value in a variable
- Accessing the display history
- Clearing the display history
- Using fractions
- Complex numbers
- Catalogs and editors
- Catalog/Editor
- Contents
- Aplet library ()
- Aplets.
- Sketch editor ( sketch)
- Sketches and diagrams, See Chapter 15, “Notes and sketches”.
- List ( list)
- Lists. In HOME, lists are enclosed in {}. See Chapter 14, “Lists”.
- Matrix ( matrix)
- One- and two-dimensional arrays. In HOME, arrays are enclosed in []. See Chapter 13, “Matrices”.
- Notepad ( notepad)
- Notes (short text entries). See Chapter 15, “Notes and sketches”.
- Program ( progrm)
- Programs that you create, or associated with user-defined aplets. See Chapter 16, “Programming”.
- 2
- Aplet views
- About the Symbolic view
- Defining an expression (Symbolic view)
- Evaluating expressions
- About the Plot view
- Setting up the plot (Plot view setup)
- Exploring the graph
- Other views for scaling and splitting the graph
- About the numeric view
- Setting up the table (Numeric view setup)
- Exploring the table of numbers
- Building your own table of numbers
- “Build Your Own” menu keys
- Example: plotting a circle
- About the Function aplet
- Function aplet interactive analysis
- About the Parametric aplet
- Getting started with the Polar aplet
- About the Sequence aplet
- About the Solve aplet
- Use an initial guess
- Interpreting results
- Plotting to find guesses
- Using variables in equations
- About the Statistics aplet
- Entering and editing statistical data
- Computed statistics
- Plotting
- About the Inference aplet
- Hypothesis tests
- Confidence intervals
- Math functions
- Math functions by category
- Symbolic calculations
- Introduction
- Storing and recalling variables
- The VARS menu
- Memory Manager
- Introduction
- Creating and storing matrices
- Working with matrices
- Matrix arithmetic
- Matrix functions and commands
- Examples
- Displaying and editing lists
- List functions
- Finding statistical values for list elements
- Introduction
- Aplet note view
- Aplet sketch view
- The notepad
- Introduction
- Creating and editing programs
- Using programs
- Customizing an aplet
- Programming commands
- Aplet commands
- Branch commands
- Drawing commands
- Graphic commands
- Loop commands
- Matrix commands
- Print commands
- Prompt commands
- Stat-One and Stat-Two commands
- Stat-Two commands
- Storing and retrieving variables in programs
- Plot-view variables
- Area Function
- Axes All Aplets
- Connect Function Parametric Polar Solve Statistics
- Coord Function Parametric Polar Sequence Solve Statistics
- Extremum Function
- FastRes Function Solve
- Grid All Aplets
- Hmin/Hmax Statistics
- Hwidth Statistics
- Indep All Aplets
- InvCross All Aplets
- Isect Function
- Labels All Aplets
- Nmin / Nmax Sequence
- Recenter All Aplets
- Root Function
- S1mark–S5mark Statistics
- SeqPlot Sequence
- Simult Function Parametric Polar Sequence
- Slope Function
- StatPlot Statistics
- Umin/Umax Polar
- Ustep Polar
- Tmin / Tmax Parametric
- Tracing All Aplets
- Tstep Parametric
- Xcross All Aplets
- Ycross All Aplets
- Xtick All Aplets
- Ytick All Aplets
- Xmin / Xmax All Aplets
- Ymin / Ymax All Aplets
- Xzoom All Aplets
- Yzoom All Aplets
- Symbolic-view variables
- Numeric-view variables
- C1...C9, C0 Statistics
- Digits All Aplets
- Format All Aplets
- NumCol All Aplets except Statistics aplet
- NumFont Function Parametric Polar Sequence Statistics
- NumIndep Function Parametric Polar Sequence
- NumRow All Aplets except Statistics aplet
- NumStart Function Parametric Polar Sequence
- NumStep Function Parametric Polar Sequence
- NumType Function Parametric Polar Sequence
- NumZoom Function Parametric Polar Sequence
- StatMode Statistics
- Note variables
- Sketch variables
- Creating new aplets based on existing aplets
- Resetting an aplet
- Annotating an aplet with notes
- Annotating an aplet with sketches
- Downloading e-lessons from the web
- Sending and receiving aplets
- Sorting items in the aplet library menu list
- Glossary
- Resetting the hp39g+
- Operating details
- Variables
- Home variables
- Function aplet variables
- Parametric aplet variables
- Category
- Available name
- Axes Connect Coord Grid Indep InvCross Labels Recenter Simult Tmin Tmax
- Tracing Tstep Xcross Ycross Xtick Ytick Xmin Xmax Ymin Ymax Xzoom Yzoom
- Angle X1 Y1 X2 Y2 X3 Y3 X4 Y4 X5
- Y5 X6 Y6 X7 Y7 X8 Y8 X9 Y9 X0 Y0
- Digits Format NumCol NumFont NumIndep
- NumRow NumStart NumStep NumType NumZoom
- NoteText
- Page
- PageNum
- Polar aplet variables
- Sequence aplet variables
- Solve aplet variables
- Statistics aplet variables
- Category
- Available name
- Axes Connect Coord Grid Hmin Hmax Hwidth Indep InvCross Labels Recenter S1mark S2mark S3mark
- S4mark S5mark StatPlot Tracing Xcross Ycross Xtick Ytick Xmin Xmax Ymin Ymax Xzoom Yxoom
- Angle S1fit S2fit
- S3fit S4fit S5fit
- C0,...C9 Digits Format NumCol
- NumFont NumRow StatMode
- Corr Cov Fit MeanX MeanY RelErr
- SX SX2 SXY SY SY2
- MATH menu categories
- Math functions
- Program constants
- Program commands
- Category
- Command
- CHECK SELECT SETVIEWS UNCHECK
- IF THEN ELSE END
- CASE IFERR RUN STOP
- ARC BOX ERASE FREEZE
- LINE PIXOFF PIXON TLINE
- DISPLAYÆ ÆDISPLAY ÆGROB GROBNOT GROBOR GROBXOR
- MAKEGROB PLOTÆ ÆPLOT REPLACE SUB ZEROGROB
- FOR = TO STEP END DO
- UNTIL END WHILE REPEAT END BREAK
- ADDCOL ADDROW DELCOL DELROW EDITMAT RANDMAT
- REDIM REPLACE SCALE SCALEADD SUB SWAPCOL SWAPROW
- PRDISPLAY PRHISTORY PRVAR
- BEEP CHOOSE DISP DISPTIME EDITMAT FREEZE
- GETKEY INPUT MSGBOX PROMPT WAIT
- DO1VSTATS RANDSEED
- SETFREQ SETSAMPLE
- Status messages

Statistics aplet 8-21
You can type PREDX and PREDY into the edit line, or you
can copy these function names from the MATH menu
under the Stat-Two category.
HINT
In cases where more than one fit curve is displayed, the
PREDY function uses the most recently calculated curve. In
order to avoid errors with this function, uncheck all fits
except the one that you want to work with, or use the Plot
View method.