-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 ]
Xσn
[ 2nd ] + [
Xσn
]
n[ RCL ] + [ C ]
Xσn-1
[ 2nd ] + [
Xσn-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 ].