Manual Casio fx-82ZA PLUS (page 19 of 29) (English)

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E-18

Paired-variable (X, Y), inverse regression

(

y = A + B/ x )

8(1/X)

Pressing any of the above keys ( 1 to 8) displays the Stat Editor.

Note: When you want to change the calculation type after entering the

STAT Mode, perform the key operation 11(STAT) 1(Type) to display

the calculation type selection screen.

Inputting Data

Use the Stat Editor to input data. Perform the following key operation to

display the Stat Editor: 11(STAT) 2(Data).

The Stat 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.

To select linear regression and input the following data:

(170, 66), (173, 68), (179, 75)

N2(STAT) 2(A+BX)

170 = 173 = 179 =ce

66 = 68 = 75 =

Important: • All data currently input in the Stat 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 Stat

Editor: m, 1m(M–), 1t(STO). Pol, Rec, and multi-statements

also cannot be input with the Stat Editor.

To change the data in a cell: In the Stat 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 Stat Editor, move the cursor to the line that you want

to delete and then press Y.

To insert a line: In the Stat Editor, move the cursor to the location where

you want to insert the line and then perform the following key operation:

11(STAT) 3(Edit) 1(Ins).

To delete all Stat Editor contents: In the Stat Editor, perform the following

key operation: 11(STAT) 3(Edit) 2(Del-A).

Obtaining Statistical Values from Input Data

To obtain statistical values, press A while in the Stat Editor and then

recall the statistical variable (σ

x, Σx

, etc.) you want. Supported statistical

variables and the keys you should press to recall them are shown below.

STATSTAT

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Casio fx-82ZA PLUS Manual

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