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TI-83 Plus Tables and Reference Information 724
where:
I
= number of populations
x
i
= the mean of each list
Sx
i
= the standard deviation of each list
n
i
= the length of each list
x
= the mean of all lists
2
.
Samp
Ü
Test
Below is the definition for the
2
.
Samp
Ü
Test
.
Sx
1
,
Sx
2
= Sample standard deviations having
n
1
-
1
and
n
2
-
1
degrees of freedom
df
, respectively.
Û
=
Û
-statistic =
2
2
1
Sx
Sx
df
(
x, n
1
-
1
, n
2
-
1
)=
Û
pdf
( ) with degrees of freedom
df
,
n
1
-
1
, and
n
2
-
1
p
= reported
p
value