Casio FX-991ES Support Question
Casio FX-991ES Support Question
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Question posted by sarriem on October 15th, 2013
How To Do Linear Regression On Fx-991es
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Related Casio FX-991ES Manual Pages
User Guide - Page 3
... CMPLX Mode to input the applicable variable, constant, or symbol. Example: 1s(sin-1)1=
Indicates the function that uses Math format,
while the LINE mark indicates Linear format. E-1 Note that this Manual
• The MATH mark indicates an example that is accessed by the key operation (1s) before it performs. Example: 1, 2, +, -, !, A, etc...
User Guide - Page 9
... you want to display the mode
menu. Select this type of operation: General calculations Complex number calculations Statistical and regression calculations Calculations involving specific number systems (binary, octal, decimal, hexadecimal) Equation solution Matrix calculations Generation of calculation that corresponds to execute, the display may show only the above indicators (without...
User Guide - Page 10
... use "]CONT'". • See "Adjusting Display Contrast" for information about how to 10) controls the number of
decimal places for displayed calculation results. Calculation results are written on paper.
• Linear format causes fractions and other expressions to be displayed in a single line.
Specifying the Input/Output Format
For this input/output format...
User Guide - Page 14
...when the Math format is the insert mode. See "Incorporating a Value into a Function" for Linear format input is selected does not switch to the overwrite mode. • Normally the input cursor...the overwrite mode is selected. • The initial default for more information. • The calculator automatically changes to the insert mode whenever you change to make room when you input a new...
User Guide - Page 23
...can omit any closed parenthesis ( ) ) immediately preceding operation of the = key at the end of a calculation that is currently selected.
Math Format
Improper Fraction
Mixed Fraction
7 3
2
1 3
('7c3) (1'(()2e1c3)
7 { 3
2 { 1 { 3
Linear Format
Numerator Denominator Integer Part
Denominator
Numerator
(7'3)
(2'1'3)
• Under initial default settings, fractions are displayed...
User Guide - Page 26
If you are using Linear format, you can press A and then d or e to make room for the previous calculation. When the calculation you are cleared whenever you input and execute, and its result. Replay Function While a calculation result is limited.
Appendix
E-24 Modes that calculation history memory contents are performing causes calculation history memory to become full...
User Guide - Page 36
...errors may be negative when f(x) < 0 within f(x), a, b, or tol. • Integration calculations can be performed in the CMPLX Mode, as long as complex numbers are treated as constants.)
a:... range (input/output format: Linear) • You can take considerable time to complete. • A smaller tol value provides better precision, but it also causes the calculation to take more time. A...
User Guide - Page 38
... ending condition being fulfilled. • A smaller tol value provides better precision, but it also causes
the calculation to specify the point for which the derivative should be obtained (differential point)
tol: Tolerance range (input/output format: Linear) • You can omit specification of the tolerance range. inclusion of 1 × 10-10 is...
User Guide - Page 45
... operation to obtain a conjugate complex number. 12(CMPLX)2(Conjg)
Appendix Determine the conjugate of Calculation Results Using Polar
Coordinate Format (r ∠ θ)
Example 1: 2 × ('3 + i) = 2'3 + 2i = 4 ∠ 30
(Angle Unit: Deg)
MATH
CMPLX
Math
2*(!3e+i)=
• With Linear format, the absolute value and argument are shown in two different lines. Example 2: '2 ∠...
User Guide - Page 46
...Types
Key Menu Item 1 1-VAR 2 A+BX 3 _+CX2 4 In X 5 e^X 6 A•B^X 7 A•X^B 8 1/X
Statistical Calculation Single-variable Linear regression Quadratic regression Logarithmic regression e exponential regression ab exponential regression Power regression Inverse regression
k Inputting Sample Data
Displaying the STAT Editor Screen The STAT editor screen appears after you enter the STAT Mode...
User Guide - Page 47
... in the formula area.
STAT Editor Screen There are the same as those you can input in the COMP Mode with Linear format. • Pressing A while inputting data clears your current input. • After inputting a value, press =. ... • Data you turn on the Statistical Display item on the calculator's setup screen, a column labeled "FREQ" will also be included on the type of statistical...
User Guide - Page 49
...-menu of the sample data on whether the currently selected statistical operation type uses a single variable or paired variables. The STAT calculation screen also uses Linear format, regardless of commands for calculating the mean, standard deviation, etc.
Single-variable Statistics
Paired-variable Statistics
STAT Menu Items Common Items
Select this menu item: 1Type...
User Guide - Page 50
... do this:
7Reg
Display the Reg sub-menu of commands for normal distribution calculations • For more information, see "Commands when Linear
Regression Calculation (A+BX) Is Selected" and "Commands when Quadratic Regression Calculation (_+CX2) Is Selected". Single-variable (1-VAR) Statistical Calculation Commands The following are the commands that appear on the STAT menu while a single...
User Guide - Page 52
See Appendix for information about the calculation
formula used for each command.
y = A + BX
The following model equation.
Sum Sub...Minimum value of the Y-data
4maxY Maximum value of the Y-data
E-50 Commands when Linear Regression Calculation (A+BX) Is Selected With linear regression, regression is performed in accordance with the following are the commands that appear on the sub-menus...
User Guide - Page 53
... Estimated value of x1 Estimated value of x2 Estimated value of y
• Sum sub-menu (sums), Var sub-menu (number of y
Appendix Linear Regression Calculation: to obtain this menu item: 1A 2B
3C
4m1 5m2 6n
When you want to
• Examples through all use the data input in accordance ...
User Guide - Page 54
..., and hexadecimal values. E-52
Statistical Calculation Type
Logarithmic Regression (ln X)
e Exponential Regression (e^X)
ab Exponential Regression (A•B^X)
Model Equation
y = A + Bln X y = AeBX y = ABX
Power Regression (A•X^B) y = AXB
Inverse Regression (1/X)
y
=
A
+
B X
Calculation Formula
Appendix Comparison of Regression Curves • The following example uses...
User Guide - Page 57
... examples of calculations with a minus sign. Before starting each calculation, be sure to re-enter the EQN Mode.
Equation Calculations (EQN)
All calculations in this ... = 0 4 aX3 + bX2 + cX + d = 0
Equation Type
Simultaneous Linear Equations with Two Unknowns
Simultaneous Linear Equations with Three Unknowns
Quadratic Equation
Cubic Equation
Changing the Current Equation Type Setting Press ...
User Guide - Page 59
... with the input/ output format and complex number display format settings of the calculator's setup screen.
• Note that the matrix selection screen also appears whenever... to specify the name of simultaneous linear equations, you cannot transform values to engineering notation while an equation solution is displayed. Appendix Equation Calculation: to scroll the display between the ...
User Guide - Page 63
...8226; This displays the step value input screen. k Start, End, and Step Value Rules
• Linear format is always used for the X variable, other variables (A, B, C, D, Y) and independent memory ... or stored in independent memory).
• Only variable X can specify either values or calculation expressions (which
must produce a numeric result) for the number table being generated. Executing ...
User Guide - Page 64
... contents cannot be edited. • Pressing the A key returns to take a long time.
Vector Calculations (VECTOR)
You can cause number table generation to the function editor screen.
Note
• Certain functions... the input/output format settings (Math format or Linear format) on the calculator's setup screen while in the TABLE Mode clears the number table generation function.
E-62
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