Casio fx-100W, fx-115W, fx-570W, fx-991W kRegression Calculations (REG Mode), Σx2, 0 G, 0 H, 0 k, yσn, 0 h, 0 n, 0 o, 0 M, 0 y, xσn, • Linear Regression, Σy2, Σxy, Σx3, Σx4, Σx2y, E-21

•Example : Using the x-data values input in the example on page 20, determine the normalized variate (→t) for x = 53 and normal probability distribution P(t).

53 A D4 (→t) = -0.284747398

A D1 ( P( ) -0.28 F= 0.38974

kRegression Calculations (REG Mode)

•Press F F 2 to enter the REG mode and then se-lect one of the following regression types. 1: Linear regression2: Logarithmic regression3: Exponential regressionr1: Power regressionr2: Inverse regressionr3: Quadratic regression•Data input always starts with A m= to clear statisti- cal memory.

•The values produced by a regression calculation depend on the values input, and results can be recalled using the key operations shown in the table below.

0 G	Σx2	A N	xσn-1
0 H	Σx	A l	p
0 k	n	A d	yσn
0 h	Σy2	A c	yσn-1
0 n	Σy	A q	Regression coefficient A
0 o	Σxy	A w	Regression coefficient B
0 M	Σx3	A e	Regression coefficient C
0 x	Σx2y	A u	Correlation coefficient r
0 y	Σx4	A O	m
A M	o	A b	n
A A	xσn

• Linear Regression

The regression formula for linear regression is: y  A  Bx.

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