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File name : SR17E-E.doc
Date: 2003/10/8 Trimmed Size : 140 x 75 mm SCALE 1 : 1
-E28-
LIN Linear Regression y = a + b x
LOG Logarithmic Regression y = a + b lnx
EXP Exponential Regression y = a • e
bx
POW Power Regression y = a • x
b
D–CL Clear all statistical data
Entering data
Always make sure you clear statistical data by D–CL before performing
statistical calculations.
(A) To input single–variable data using the following syntaxes :
# Individual data : [ DATA ] < x value >
# Multiple data of the same value :
[ DATA ] < x value > [ x ] < Number of repeats >
(B) To input paired–variable / regression data using the following
syntaxes :
# Individual data-set : [ DATA ] < x value > [
] < y value >
# Multiple data of the same value :
[ DATA ] < x value > [
] < y value > [ x ] < Number of repeats >
(Note) : Even you exit STAT mode, all data are still retained unless you
clear all data by selecting D-CL mode.
Displaying results
The values of the statistical variables depend on the data you input.
You can recall them by the key operations shown in the below table.
Single–variable statistics calculations
Variables Meaning
n ( [ n ] ) Number of the x values entered
x
( [2nd]+[
x
] ) Mean of the x values
Sx ( [2nd]+[ Sx ] ) Sample standard deviation of x values
σ
x ( [2nd]+[
σ
x ] ) Population standard deviation of x values
¦
x ( [2nd]+[
¦
x ] ) Sum of all x values
¦
x
2
( [2nd]+[
¦
x
2
]) Sum of all x
2
values
CP ( [2nd]+[ CP ] ) Potential capability precision of the x values
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