<s>
Box	B-General_Concept
's	I-General_Concept
M	I-General_Concept
test	I-General_Concept
is	O
a	O
multivariate	O
statistical	O
test	O
used	O
to	O
check	O
the	O
equality	O
of	O
multiple	O
variance-covariance	O
matrices	O
.	O
</s>
<s>
The	O
test	O
is	O
commonly	O
used	O
to	O
test	O
the	O
assumption	O
of	O
homogeneity	B-General_Concept
of	O
variances	O
and	O
covariances	O
in	O
MANOVA	B-General_Concept
and	O
linear	B-General_Concept
discriminant	I-General_Concept
analysis	I-General_Concept
.	O
</s>
<s>
Box	B-General_Concept
's	I-General_Concept
M	I-General_Concept
test	I-General_Concept
is	O
susceptible	O
to	O
errors	O
if	O
the	O
data	O
does	O
not	O
meet	O
model	O
assumptions	O
or	O
if	O
the	O
sample	O
size	O
is	O
too	O
large	O
or	O
small	O
.	O
</s>
<s>
Box	B-General_Concept
's	I-General_Concept
M	I-General_Concept
test	I-General_Concept
is	O
especially	O
prone	O
to	O
error	O
if	O
the	O
data	O
does	O
not	O
meet	O
the	O
assumption	O
of	O
multivariate	O
normality	O
.	O
</s>
