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Casio fx-991ES PLUS User Manual

Casio fx-991ES PLUS
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The Statistics Editor provides 80 rows for data input when there is an X
column only, 40 rows when there are X and FREQ columns or X and Y
columns, or 26 rows when there are X, Y, and FREQ columns.
Note
Use the FREQ (frequency) column to input the quantity (frequency) of identical data
items. Display of the FREQ column can be turned on (displayed) or off (not displayed)
using the Stat Format setting on the setup menu.
Example 1: To select linear regression and input the following data:
(170, 66), (173, 68), (179, 75)
(STAT) (A+BX)
170 173 179
66 68 75
Important!
All data currently input in the Statistics Editor is deleted whenever you exit the STAT
Mode, switch between the single-variable and a paired-variable statistical calculation
type, or change the Stat Format setting on the setup menu.
The following operations are not supported by the Statistics Editor: ,
(M-), (STO). Pol, Rec, and multi-statements also cannot be input with the
Statistics Editor.
To change the data in a cell:
In the Statistics Editor, move the cursor to the cell that contains the data
you want to change, input the new data, and then press
.
To delete a line:
In the Statistics Editor, move the cursor to the line that you want to delete
and then press .
To insert a line:
In the Statistics Editor, move the cursor to the location where you want to
insert the line and then perform the following key operation:
(STAT) (Edit) (Ins).
48

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Casio fx-991ES PLUS Specifications

General IconGeneral
TypeScientific
CoverNo
Form factorDesktop
Control typeButtons
Product colorGray
Digits15 digits
Display typeDot-matrix
Display resolution96 x 31 pixels
Display number of lines10 lines
Storage media typeNot available
Battery life3 year(s)
Battery typeLR44
Power sourceBattery/Solar
Number of batteries supported1
Symbolic notationSquare root
Conversion betweenDecimal, Fraction, Percent
Convert angles from degrees toGradian, Radian
Random number/integer generatorYes
Weight and Dimensions IconWeight and Dimensions
Depth162 mm
Width80 mm
Height11.1 mm
Weight95 g

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