CITIZEN SR-275EU - Manual (Page 13)

SR17D-D1-E.doc SIZE:140x75mm SCALE 2:1 2003/9/15
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• The values of the statistical variables depend on the data you in-
put. You can recall them by the key operations shown in the below
table. See Example 27.
Σ x 2 [ RCL ] + [ . A . ] x [ 2nd ] + [ x ]
Σ x [ RCL ] + [ . B . ] Xı
n
[ 2nd ] + [ Xı
n
]
n [ RCL ] + [ . C . ] Xı
n–1
[ 2nd ] + [ Xı
n–1
]
Regression Calculation
ſ Use the REG mode for regression calculations.
Press [ MODE ] 3 to enter the REG menu and then choose one of
the six regression types by pressing the corresponding argument
value, as follow :
Lin Log Exp О
1 2
    → 
→] [
    → 
←] [
Н Pwr Inv Quad
1 2 3
Lin Linear Regression y = A + B x
Log Logarithmic Regression y = A + B lnx
Exp Exponential Regression y = A • e Bx
Pwr Power Regression y = A • x B
Inv Inverse Regression y = A +
x
B
Quad Quadratic Regression y = A + B x + C x 2
• Always make sure you clear statistical memory by [ 2nd ] [ Scl ]
before preforming regression calculation.
• Individual data can be input using [ DT ] ; To delete data you just
input, please press [ 2nd ] [ CL ]. Multiple data of the same value
can be input using [ 2nd ] [ ; ]. For example, to input the data 40
and 55 ten times, press 40 [ , ] 55 [ 2nd ] [ ; ] 10 [ DT ].
• The values of the statistical variables depend on the data you in-
put. You can recall them by the key operations shown in the below
table. To predict a value for x (or y) given a value for y (or x), enter
the given value, press [ 2nd ] [
∧
y ] (or [ 2nd ] [
∧
x ] ), and press [ = ]
again. See Example 28.
Σ x 2 [ RCL ] + [ . A . ] xı
n
[ 2nd ] + [ xı
n
]
Σ x [ RCL ] + [ . B . ] xı
n–1
[ 2nd ] + [ xı
n–1
]
n [ RCL ] + [ . C . ] y [ 2nd ] + [ y ]
Σ y 2 [ RCL ] + [ . D . ] yı
n
[ 2nd ] + [ yı
n
]
Σ y [ RCL ] + [ . E . ] yı
n–1
[ 2nd ] + [ yı
n–1
]