Casio fx-991ES PLUS User Manual

To delete all Statistics Editor contents:
In the Statistics Editor, perform the following key operation:
(STAT) (Edit) (Del-A).
Statistics Calculation Screen
The Statistics Calculation Screen is for performing statistical calculations
with the data you input with the Statistics Editor. Pressing the key
while the Statistics Editor is displayed switches to the Statistics Calculation
Screen.
Using the Statistics Menu
While the Statistics Calculation Screen is on the display, press
(STAT) to display the Statistics Menu.
The content to the Statistics Menu depends on whether the currently
selected statistical operation type uses a single variable or paired
variables.
Single-variable Statistics
Paired-variables Statistics
Statistics Menu Items
Common Items
Select this menu
item:
When you want to obtain this:
(Type) Display the calculation type selection screen
(Data) Display the Statistics Editor
(Sum)
Display the Sum sub-menu of commands for
calculating sums
49

Casio fx-991ES PLUS Specifications

General

Type	Scientific
Cover	No
Form factor	Desktop
Control type	Buttons
Product color	Gray
Digits	15 digits
Display type	Dot-matrix
Display resolution	96 x 31 pixels
Display number of lines	10 lines
Storage media type	Not available
Battery life	3 year(s)
Battery type	LR44
Power source	Battery/Solar
Number of batteries supported	1
Symbolic notation	Square root
Conversion between	Decimal, Fraction, Percent
Convert angles from degrees to	Gradian, Radian
Random number/integer generator	Yes

Weight and Dimensions

Depth	162 mm
Width	80 mm
Height	11.1 mm
Weight	95 g