Casio FX-991ES Support Question
Casio FX-991ES Support Question
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Question posted by dellhtheo on March 26th, 2014
How To Calculate Standard Deviation Using Fx-991es
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Related Casio FX-991ES Manual Pages
User Guide - Page 4
...; The contents of the actual key operation you see the symbol Appendix in calculator memory.
19(CLR)3(All)=(Yes)
• For information about calculation modes and setup settings, see "Calculation Modes and Calculator Setup".
• For information about memory, see "Using Calculator Memory".
Note that this operation also clears all data currently in this product and...
User Guide - Page 5
... it in a safe place where it . Never expose the battery to direct heat or dispose of it by burning it will not get into the
calculator. • Use only the type of battery specified for later reference. Doing so can result in
this manual.
E-3
If accidentally swallowed, consult with a physician immediately.
•...
User Guide - Page 6
... battery in direct sunlight, near a window, near a heater or anywhere else it to strong impact.
• Never twist or bend the calculator. Never use thinner, benzene or other pointed object. • Use a soft, dry cloth to clean the exterior of this unit discharges slightly during shipment and storage.
A dead battery can damage internal...
User Guide - Page 7
... Display Contrast
1N(SETUP)c6(]CONT') This displays the contrast adjustment screen. Before Using the Calculator
k Removing the Hard Case
Before using d and e while the mode menu (which appears when you want, press A.
• You can also adjust contrast using the calculator, slide its hard case downwards to remove it probably means that battery power...
User Guide - Page 9
The setup menu has two screens, which you can use to control how the calculations are executed and displayed.
Important!
• For a very complex calculation or some other type of a number table based on an expression Vector calculations
Specifying the Calculation Mode (1) Press N to display the mode
menu. c
f
E-7 Select this mode:
COMP CMPLX
STAT
BASE-N
EQN...
User Guide - Page 12
... division, functions, and parentheses. Example: 2 (5 + 4) - 2 × (-3) =
LINE
2(5+4)2*y3=
Inputting a Function with the open parenthesis ( ( ) character.
Inputting Expressions and Values
k Inputting a Calculation Expression Using Standard Format
Your calculator lets you need to this: COMP MthIO Deg Norm1 d/c a+bi OFF Dot
• To cancel initialization without doing anything, press...
User Guide - Page 25
Using Multi-statements in Calculations
You can use the colon character (:) to connect two or more expressions and execute them in sequence from left to its sexagesimal equivalent.
Appendix Convert 2.255 to right when you press =. Example: To create a multi-statement that performs the following types of sexagesimal calculations
produces a sexagesimal result. - Sexagesimal Calculations ...
User Guide - Page 30
...: LINE
3*Sy(A)
s
Prompts for A. Current value of a value for input of A
5=
E-28
Example: Y = 2X, A = X2 + X + 3
k Example Calculation Using CALC
To start a CALC operation after inputting an expression, press the s key.
Using CALC
The CALC feature lets you input a calculation expression that contain variables Example: 2X + 3Y, 5B + 3i, 2AX + 3BY + C
u Multi-statements Example...
User Guide - Page 36
.... k Power Functions and Power Root Functions
• Power functions and power root functions can be used in the COMP, STAT, EQN, MATRIX, TABLE, and VECTOR calculation modes.
• The X2, X3, X-1 functions can be used in complex number calculations in the CMPLX Mode, and complex number arguments are supported.
• The X^, '(, 3'(, ^'( functions can be...
User Guide - Page 39
... Coordinates (Rec)
Polar Coordinates (Pol)
• Coordinate conversion can obtain the sum of an input f(x) expression for a specific range. Σ calculations are performed using the calculator's default angle
unit.
• Calculation result r is assigned to variable X, while θ is assigned
to Polar Coordinates (Pol) Pol(X, Y) X: Specifies the rectangular coordinate X value...
User Guide - Page 40
... pseudo random number that is zero or a positive integer.
n and r must be different.
Factorial (!) This function obtains the factorials of a stand-alone operation, the calculation is performed using only the first value (either the r-value or the X-value) produced by 1000. The random 3 digit decimal values are converted to 3-digit integer values...
User Guide - Page 42
... Displayed Values
You can use S-D transformation to transform a value between standard form and decimal form.
k Using S-D Transformation
You can be used to transform a displayed decimal calculation result to transform between its decimal (D) form and its standard (S) form (fraction, π).
Formats Supported for S-D Transformation S-D transformation can use the procedures in this...
User Guide - Page 43
... time to use. Example: Fraction → Decimal
MATH
Math
'5c6=
• Each press of S-D Transformation Note that S-D transformation can convert it cannot be converted to inverse trigonometric function results and values that are normally expressed in radians.
• After obtaining a calculation result in ' form, you transform from decimal form to standard form, the...
User Guide - Page 49
The STAT calculation screen also uses Linear format, regardless of the current input/output format setting on the display. Display the MinMax sub-menu of commands for calculating the mean, standard deviation, etc.
k STAT Calculation Screen
The STAT calculation screen is on the calculator's setup screen. Single-variable Statistics
Paired-variable Statistics
STAT Menu Items Common Items...
User Guide - Page 50
... sample data Population standard deviation Sample standard deviation
MinMax Sub-menu (11(STAT)6(MinMax))
Select this menu item: 1minX 2maxX
When you select 4(Sum), 5(Var), 6(MinMax), or 7(Distr) on the sub-menus that appear on the STAT menu while a single-variable statistical calculation type is selected. See Appendix for information about the calculation
formula used for regression...
User Guide - Page 51
... normal distribution approximation on the STAT editor
screen.
Calculate sum of squares of the sample data and sum of samples, mean value (o) and population standard deviation value (xσn) obtained from the data input on
the input sample data (from Example ) produces
the probabilities shown below , using insert and delete:
{0, 1, 2, 3, 4, 5, 6, 7, 9, 10}
(FREQ: ON)
Edit the...
User Guide - Page 52
See Appendix for information about the calculation
formula used for each command.
Sum Sub-menu (11(STAT)4(Sum))
Select this ...σn-1
Number of samples Mean of the X-data Population standard deviation of the X-data Sample standard deviation of the X-data Mean of the Y-data Population standard deviation of the Y-data Sample standard deviation of the Y-data
MinMax Sub-menu (11(STAT)6(MinMax...
User Guide - Page 53
...3r 4m 5n
Correlation coefficient r Estimated value of x Estimated value of samples, mean, standard deviation), and MinMax sub-menu (maximum value, minimum value) operations are the same those for...menu (sums), Var sub-menu (number of y
Appendix Linear Regression Calculation: to
• Examples through all use the data input in accordance with the following model equation. y = A ...
User Guide - Page 66
...× B
Scientific Constants
Your calculator comes with 40 built-in constants that corresponds to VctB =
(3, 4). • The following are commonly used in Examples
and (VctA, VctB, VctC... 35: standard acceleration of gravity; 36: conductance quantum; 37: characteristic impedance of vacuum; 38: Celsius temperature; 39: Newtonian constant of gravitation; 40: standard atmosphere
E-64...
User Guide - Page 67
... Priority Sequence
The calculator performs calculations according to a calculation priority sequence. • Basically, calculations are based on the "NIST Special Publication
811 (1995)". * "cal" uses the NIST value at 15°C. Appendix and Perform all of the metric conversion commands and conversion formulas. • Conversion formula data is based on ISO Standards (1992) and CODATA...
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