<s>
In	O
statistics	O
,	O
the	O
Cucconi	B-General_Concept
test	I-General_Concept
is	O
a	O
nonparametric	B-General_Concept
test	I-General_Concept
for	O
jointly	O
comparing	O
central	O
tendency	O
and	O
variability	O
(	O
detecting	O
location	O
and	O
scale	O
changes	O
)	O
in	O
two	O
samples	O
.	O
</s>
<s>
Many	O
rank	O
tests	O
have	O
been	O
proposed	O
for	O
the	O
two-sample	B-Algorithm
location-scale	I-Algorithm
problem	I-Algorithm
.	O
</s>
<s>
The	O
Cucconi	B-General_Concept
test	I-General_Concept
was	O
first	O
proposed	O
by	O
Odoardo	O
Cucconi	O
in	O
1968	O
.	O
</s>
<s>
The	O
Cucconi	B-General_Concept
test	I-General_Concept
is	O
not	O
as	O
familiar	O
as	O
other	O
location-scale	O
tests	O
but	O
it	O
is	O
of	O
interest	O
for	O
several	O
reasons	O
.	O
</s>
<s>
First	O
,	O
from	O
a	O
historical	O
point	O
of	O
view	O
,	O
it	O
was	O
proposed	O
some	O
years	O
before	O
the	O
Lepage	B-General_Concept
test	I-General_Concept
,	O
the	O
standard	O
rank	O
test	O
for	O
the	O
two-sample	B-Algorithm
location-scale	I-Algorithm
problem	I-Algorithm
.	O
</s>
<s>
Secondly	O
,	O
as	O
opposed	O
to	O
other	O
location-scale	O
tests	O
,	O
the	O
Cucconi	B-General_Concept
test	I-General_Concept
is	O
not	O
a	O
combination	O
of	O
location	O
and	O
scale	O
tests	O
.	O
</s>
<s>
The	O
Cucconi	B-General_Concept
test	I-General_Concept
is	O
based	O
on	O
the	O
following	O
statistic	O
:	O
</s>
