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H ow to o pe ra te, Read b efore using – Sharp W Series User Manual

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H ow to O pe ra te

2nd function key
Pressing this key will enable the functions

written in orange above the calculator

buttons.

ON/C, OFF key
D irect function

Mode key
This calculator can operate in three different

modes as follows.

W ritten in orange above

the O N /C key

1 . K E Y L AY O U T

If the calculator fails to operate normally,

press the reset switch on the back to

reinitialise the unit. The display format

and calculation mode will return to their

initial settings.

RESET

2 . R E S E T S W I T C H

Reset switch

RESET

2nd function

N OT E :
Pressing the reset switch

will erase any data stored

in memory.

≈Read B efore Using≈

This operation guide has been written based on the EL-531W , EL-509W , and EL-531W H
models. Some functions described here are not featured on other models. In addition,
key operations and symbols on the display may differ according to the model.

•Mode = 0; normal mode for
performing normal arithmetic
and function calculations.

[Normal mode]

•Mode = 1; STAT-0 mode for
performing 1-variable statisti-
cal calculations.

[STAT-0 mode]

•Mode = 1; STAT-1–6 mode
for performing 2-variable
statistical calculations.

[STAT-1–6 mode]

W hen changing to the statistical sub-mode,

press the corresponding number key after

performing the operation to select the statistics

mode (press ).

(LIN E):

Linear regression calculation

(Q UAD): Q uadratic regression calculation

(EX P):

Exponential regression calculation

(LO G): Logarithmic regression calculation

(PW R):

Power regression calculation

(IN V):

Inverse regression calculation