Texas Instruments TI-82 STATS

Tables and Reference Information A–51
826DEC~1.DOC TI-83 international English Bob Fedorisko Revised: 10/26/05 2:20 PM Printed: 10/27/05 3:09
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=−=1 numerator for Û
Error 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(