User`s guide

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Inputan initialvaluefor X(Here, input1): 1§
I*~X2-X+1
L-R=
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No.
L~atisti~a!.pa.culations~I$TA!)
To start a statistical calculation, perform the key operation ~ [I) (STAT)
to enter the STAT Mode and then use the screen that appears to select the
type of calculation you want to perform.
Pressing any of the above keys (II) to !II) displays the Stat Editor.
Note: When you want to change the calculation type after entering the STAT
Mode, perform the key operation @!!I1I)(STAT/DIST)II)(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: @!iI1I)(STATIDIST)[IJ(Data).
The Stat Editor provides 40 rows for data input when there is an X column
only or when there are X and Ycolumns, 20 rows when there are Xand FREO
columns, or 26 rows when there are X, Y, and FREO columns.
Note: Use the FREO (frequency) column to input the quantity (frequency) of
identical data items. Display ofthe FREO column can be tumed on (displayed)
or off (not displayed) using the Stat Format setting on the setup menu.
2
o
L:t To select linear regression and input the following data:
(170,66), (173, 68), (179, 75)
STAT m
~[I)(STAT)[IJ(A+BX) I !I I v I
3
o
o
170§ 173§ 179§<i><E>
4
o
66§68§75§
Important: .All data currently input in the Stat Editor is deleted whenever
you exit the STAT Mode, switch behveen 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:1MtJ,@!jJIMtJ(M-),@@I(STO), Pol, Rec, +R, 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: Inthe Stat Editor, move the cursor to the line that you want
to delete and then press @).
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:
@ II) (STAT/DIST)[I) (Edit)II) (Ins).
To delete all Stat Editor contents: Inthe Stat Editor, perform the following
key operation: @!!III) (STAT/DIST) [I) (Edit) [IJ (Del-A).
Obtaining Statistical Values from Input Data
To obtain statistical values, press @9 while in the Stat Editor and then
recall the statistical variable (ax, rx', etc.) you want. Supported statistical
variables and the keys you should press to
recallthem are shown below.
For single-variable statistical calculations, the variables marked with an
asterisk (') are available.
Sum: rx", rx', ty', ty,!:.!:y, tx", rx'y, rx'
@!j)II) (STAT/DIST) [I) (Sum) II) to !II
Number of Items: n', Mean:x', y, Population Standard Deviation:ax',
Oy,Sample
Standard Deviation:$x', Sy
@!!I1I)(STAT/DlST) (!J(Var) II) to m
Regression Coefficients: A, B, Correlation Coefficient: r, Estimated
Values: X,y
@!!III) (STAT/DIST) [ID(Reg) II) to [ID
Regression Coefficients for Quadratic Regression: A, B, C, Estimated
Values: XI, Xz, Y
@!!III)(STAT/DIST) [ID(Reg) II) to lID
.See the table at the beginning of this section olthe manual for the regression
formulas.
To select this type of statistical calculation:
Press this key:
(Regression formula shown in parentheses)
Single-variable (X)
II) (1-VAR)
Paired-variable(X,V),linearregression (y =A + Bx)
[IJ (A+BX)
Paired-variable (X, V), quadratic regression
[I)L+CX')
(y=A +Bx + Cx")
Paired-variable (X, V), logarithmic regression
(!J (In X)
(y
=A + Blnx)
Paired-variable (X, Y), e exponential regression
[ID(eAX)
(y=Ae"-')
Paired-variable (X, Y), ab exponential regression
lID (A'SAX)
(y=AB-')
Paired-variable (X, V), power regression
(y
=Ax")
ILl (A'XAB)
Paired-variable (X, Y), inverse regression
lID(1/X)
(y =A + B/x)