George Yacoubian, Table 3

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Table 3
ANOVA Tables and Cluster Memberships Based on K-Means
Clustering Solutions Before and After Removal of Outliers

Outliers Included
(N=1,150)

Outliers Removed
(N=1,118)

Variable

F Statistic
ETA²
Variable
F Statistic
ETA²

Age

372.15
.57
Age
184.69
.18

Gender

7.91
.03
Gender
5.84
.02

Type of Charge

494.19
.11
Type of Charge
134.58
.04

Experimental Use

266.59
.48
Experimental Use
124.31
.27

Need/Influence

Easily Obtainable CNS

421.18

35.02

.59

.11

Need/Influence

Easily Obtainable CNS

385.57

27.02

.44

.08

Cluster Memberships:

Cluster Memberships:

Cluster One:

Cluster Two:

Cluster Three:

Cluster Four:

Cluster Five:

N=220
N=359

N=136

N=54

N=381

Cluster One:

Cluster Two:

Cluster Three:

Cluster Four:

Cluster Five:

N= 195
N= 395

N= 156

N= 88

N= 284

All ETA² values are significant at p<.01

Outliers Included (N=1,150)			Outliers Removed (N=1,118)
*Variable*	*F Statistic*	*ETA²*	*Variable*	*F Statistic*	*ETA²*
Age	372.15	.57	Age	184.69	.18
Gender	7.91	.03	Gender	5.84	.02
Type of Charge	494.19	.11	Type of Charge	134.58	.04
Experimental Use	266.59	.48	Experimental Use	124.31	.27
Need/Influence Easily Obtainable CNS	421.18 35.02	.59 .11	Need/Influence Easily Obtainable CNS	385.57 27.02	.44 .08
*Cluster Memberships:*			*Cluster Memberships:*
Cluster One: Cluster Two: Cluster Three: Cluster Four: Cluster Five:	N=220 N=359 N=136 N=54 N=381		Cluster One: Cluster Two: Cluster Three: Cluster Four: Cluster Five:	N= 195 N= 395 N= 156 N= 88 N= 284