Casio CFX-9970G User Manual page 306

18 - 6
Tests
Perform the following key operation to display a graph.
The following item is also shown when Pooled = On.
u u u u u LinearReg t Test
LinearReg
on a graph. Next, a straight line (
greatest number of plots are located and the degree to which a relationship exists
is calculated.
Perform the following key operation from the statistical data list.
G µ .............. direction of test
µ
1 2
t t
......................
-value
p
..................... p-value
df
.................... degrees of freedom
o
.................... sample 1 mean
1
o
.................... sample 2 mean
2
x
............... sample 1 standard deviation
%
1 n -1
x
............... sample 2 standard deviation
%
2 n -1
n
.................... sample 1 size
1
n
.................... sample 2 size
2
J
ccccccc
6(DRAW)
x
............... pooled sample standard deviation
%
p n -1
t
Test treats paired-variable data sets as (
n
& ( x – o)( y – p)
i=1
b =
n
2
& (x – o)
i=1
3(TEST)
t
2( )
3(REG)
y a bx
= + ) is drawn through the area where the
a = p – bo
t = r
x y
, ) pairs and plots all data
a
: intercept
b
: slope of the line
n – 2
2
1 – r
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