Sharp W Series ≈R ead B efore Using≈, K E Y L Ay O U T, H ow to Ope ra te, R E S E T S W I T C H

H ow to Ope ra te

≈R ead 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.

1 . K E Y L AY O U T

2nd function key

Pressing this key will enable the functions written in orange above the calculator buttons.

ON/C, OFF key

D irect function

<Power on>

Mode key

2nd function

<Power off>

W ritten in orange above the O N /C key

This calculator can operate in three different modes as follows.

<Example>

[Normal mode]

[STAT-0 mode]

[STAT-1–6 mode]

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

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

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

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

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.

N OT E :

Pressing the reset switch will erase any data stored in memory.

Reset switch

RESET

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

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