Texas Instruments TI-84 PLUS - Graphing Calculator Manual Book page 392

ANOVA(
Ü statistic is:
The
ANOVA
FactorMS
Ü =
--------------------------
ErrorMS
The mean squares (
MS
FactorSS
FactorMS = ------------------------
Factordf
ErrorSS
ErrorMS = -------------------- -
Errordf
The sum of squares (
SS
I
∑
FactorSS = n
i = 1
I
∑
(
ErrorSS = n
i = 1
The degrees of freedom
Factordf = I 1 – =
I
∑
(
Errordf = n
i = 1
where: I = number of populations
= the mean of each list
x
i
= the standard deviation of each list
Sxi
= the length of each list
ni
= the mean of all lists
x
2-SampFTest
Below is the definition for the
1, 2
Sx Sx
Ü
) that make up Ü are:
) that make up the mean squares are:
2
( )
x x –
i i
)Sx
1 – 2
i i
that make up the mean squares are:
df
Ü
numeratordf for
)
– 1 = denominatordf for
i
Ü
- .
2 Samp Test
= Sample standard deviations having
and degrees of freedom
n 1 –
2
respectively.
Sx1
⎛ ⎞
= Û-statistic =
-------- -
⎝ ⎠
Sx2
Ü
n 1 –
1
,
df
2
Appendix B: Reference Information 385