Casio FX-9750G PLUS User's Manual & Technical Reference page 315

µ G µ
.............. direction of test
1 2
t
......................
p
..................... p-value
df
.................... degrees of freedom
.................... sample 1 mean
o
1
.................... sample 2 mean
o
2
σ
x
............... sample 1 standard deviation
1 n -1
σ
x
............... sample 2 standard deviation
2 n -1
n
.................... sample 1 size
1
n
.................... sample 2 size
2
Perform the following key operations to display a graph.
J
ccccccc
6(DRAW)
The following item is also shown when Pooled = On.
x σ
............... pooled sample standard deviation
p n
-1
u u u u u LinearReg t Test
t
LinearReg Test treats paired-variable data sets as (
method of least squares to determine the most appropriate
data for the regression formula
t
coefficient and value, and calculates the extent of the relationship between
y
.
n
Σ
( x – o)( y – p)
i=1
b =
n
Σ
2
(x – o)
i=1
Perform the following key operations from the statistical data list.
3(TEST)
t
)
2(
3(REG)
t
value
y a bx
= + . It also determines the correlation
a = p – bo
Tests
x y
, ) pairs, and uses the
a b
, coefficients of the
a
: intercept
b
: slope of the line
n – 2
t = r
2
1 – r
18 - 6
x
and
287