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:
FactorMS Factor SS
Factor df
=
ErrorMS Error SS
Error df
=
The sum of squares (SS) that make up the mean squares
are:
FactorSS n x x
ii
i
I
()
=−
=
∑2
1
ErrorSS n Sx
ii
i
I
()
=−
=
∑12
1
The degrees of freedom df that make up the mean squares
are:
Factor df I df
=−=1numerator for
Û
Error df n df
i
i
I
( ) denominator for
=−=
=
∑1
1
Û
where: I= number of populations
xi= 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(