<s>
The	O
term	O
normal	B-General_Concept
score	I-General_Concept
is	O
used	O
with	O
two	O
different	O
meanings	O
in	O
statistics	O
.	O
</s>
<s>
Particularly	O
in	O
applications	O
where	O
the	O
name	O
"	O
normal	B-General_Concept
score	I-General_Concept
"	O
is	O
used	O
,	O
there	O
is	O
usually	O
a	O
presumption	O
that	O
the	O
value	O
can	O
be	O
referred	O
to	O
a	O
table	O
of	O
standard	O
normal	O
probabilities	O
as	O
a	O
means	O
of	O
providing	O
a	O
significance	O
test	O
of	O
some	O
hypothesis	O
,	O
such	O
as	O
a	O
difference	O
in	O
means	O
.	O
</s>
<s>
The	O
second	O
meaning	O
of	O
normal	B-General_Concept
score	I-General_Concept
is	O
associated	O
with	O
data	O
values	O
derived	O
from	O
the	O
ranks	O
of	O
the	O
observations	O
within	O
the	O
dataset	O
.	O
</s>
<s>
A	O
given	O
data	O
point	O
is	O
assigned	O
a	O
value	O
which	O
is	O
either	O
exactly	O
,	O
or	O
an	O
approximation	O
,	O
to	O
the	O
expectation	O
of	O
the	O
order	B-General_Concept
statistic	I-General_Concept
of	O
the	O
same	O
rank	O
in	O
a	O
sample	O
of	O
standard	O
normal	O
random	O
variables	O
of	O
the	O
same	O
size	O
as	O
the	O
observed	O
data	O
set	O
.	O
</s>
<s>
Thus	O
the	O
meaning	O
of	O
a	O
normal	B-General_Concept
score	I-General_Concept
of	O
this	O
type	O
is	O
essentially	O
the	O
same	O
as	O
a	O
rankit	B-Application
,	O
although	O
the	O
term	O
"	O
rankit	B-Application
"	O
is	O
becoming	O
obsolete	O
.	O
</s>
