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Casio fx-991ZA PLUS II User Manual

Casio fx-991ZA PLUS II
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4. After inputting values for all of the variables, press .
This displays the calculation results.
Pressing or while a calculation result is displayed will return to
the input screen of the first variable.
Note
To change the distribution calculation type after you enter the DIST Mode, press
(STAT/DIST) (Type) and then select the distribution type you want.
Distribution calculation accuracy is up to five significant digits.
Variables that Accept Input
The following are distribution calculation variables that accept input
values.
Normal PD ........................... x, σ, μ
Normal CD ........................... Lower, Upper, σ, μ
Inverse Normal .................... Area, σ, μ (Tail setting always left.)
Binomial PD, Binomial CD ... x (or List), N, p
Poisson PD, Poisson CD ..... x (or List), μ
x: data
σ: standard deviation (σ < 0)
μ: mean
Lower: lower boundary
Upper: upper boundary
Tail: probability value tail specification
Area: probability value (0 Area 1)
List: sample data list
N: number of trials
p: success probability (0 p 1)
List Screen (Binomial PD, Binomial CD, Poisson
PD, Poisson CD)
With Binomial PD, Binomial CD, Poisson PD, and Poisson CD, use the
List Screen for sample data input. You can input up to 25 data samples for
each variable. Calculation results are also displayed on the List Screen.
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Table of Contents

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Casio fx-991ZA PLUS II Specifications

General IconGeneral
TypeScientific Calculator
Number of Functions552
Equation SolverYes
Matrix CalculationsYes
Complex Number CalculationsYes
IntegrationYes
DifferentiationYes
Memory9 variables
Weight95 g
Protective CaseYes
DisplayNatural Textbook Display
Power SourceSolar and Battery

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