Texas Instruments TI-83 - Page 407

Tables and Reference Information A-51
8399APXA.DOC TI-83 international English Bob Fedorisko Revised: 02/19/01 1:25 PM Printed: 02/19/01 1:40 PM
Page 51 of 58
The ANOVA
Û
statistic is:
Û
=
Factor MS
Error MS
The mean squares (
MS
) that make up
Û
are:
Factor MS
Factor SS
Factor df
=
Error MS
Error SS
Error df
=
The sum of squares (
SS
) that make up the mean squares
are:
Factor SS n x x
ii
i
I
()
=−
=
∑
2
1
Error SS n Sx
ii
i
I
()
=−
=
∑
1
2
1
The degrees of freedom
df
that make up the mean squares
are:
Factor df I df
=−=1numerator for
Û
Erro r df n df
i
i
I
( ) denominator for
=−=
=
∑
1
1
Û
where:
I
= number of populations
x
i
= the mean of each list
Sxi
= the standard deviation of each list
ni
= the length of each list
x
= the mean of all lists
ANOVA(