Casio fx-991EX User Manual

fx-991EX Quick Start Guide 25
The fx-991EX can quickly generate probability distribution tables, covering the Normal, Inverse Normal, Binomial, and
Poisson distributions.
From the Main Menu, use the arrow keys to highlight the
Distribution icon, then press por press 7.
Select 1(Binomial CD) from the second page to analyze the
following Binomial Distribution problem: “A fair 6-sided die is
rolled six times. Find P(6 comes up at least twice).”
After pressing p to input the value of p, ClassWiz
automatically converts the fraction into a decimal for its
own purposes.
Press p again to calculate the probability.
To enter the values of x (number of successes), N (number of
trials), and p (probability of success), press 2(Variable). Input
the values as shown, using a to create the fraction separator.
Several distribution choices appear. Use R to access the second page.
DISTRIBUTION

Casio fx-991EX Specifications

General

Type	Scientific
Cover	No
Form factor	Pocket
Control type	Buttons
Product color	Black, White
Battery type	LR44
Power source	Battery/Solar
Number of batteries supported	1
Digits	16 digits
Display type	LCD
Display resolution	192 x 63 pixels
Display number of lines	2 lines
Display number of characters	16
Storage media type	-
Operation	552
Conversion between	Decimal, Fraction, Percent
Convert angles from degrees to	Gradian, Radian
Random number/integer generator	Yes

Weight and Dimensions

Depth	165.5 mm
Width	77 mm
Height	11.1 mm
Weight	90 g