CITIZEN SR-270N - Инструкция (Страница 14)

-E13-
Standard Deviation Calculation
Use the SD mode for standard deviation calculations.
• Always make sure you clear statistical memory by [ 2nd ] [ Scl ]
before preforming standard deviation 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 15
seven times, press 15 [ 2nd ] [ ； ] 7 [ 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. See Example 41.
[ RCL ] + [ A ] x
_
[ 2nd ] + [ x
_
]
[ RCL ] + [ B ] X σ
n [ 2nd ] + [ X σ
n ]
n [ RCL ] + [ C ] X σ
n-1 [ 2nd ] + [ X σ
n-1 ]
Regression Calculation
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
1 2 3
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 +
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 ].