Top Words
Word 
Count 
the  1618 
of  880 
and  626 
in  491 
to  415 
is  364 
for  363 
a  351 
school  324 
model  247 
be  227 
are  198 
on  186 
that  181 
schools  169 

Top Bigrams
Bigram 
Count 
of the  266 
in the  126 
for the  117 
the school  66 
on the  63 
to the  56 
aitkin and  53 
and the  52 
the model  49 
can be  42 
it is  42 
to be  41 
that the  39 
variance component  39 
from the  36 

Top Trigrams
Trigram 
Count 
aitkin and longford  29 
the complete sample  20 
of the paper  20 
professor aitkin and  20 
the paper by  19 
and dr longford  19 
discussion of the  19 
paper by professor  18 
by professor aitkin  18 
aitkin and dr  18 
for the complete  16 
of the school  13 
the use of  13 
j r statist  12 
the school variance  11 

Top Quadgrams
Quadgram 
Count 
the paper by professor  18 
professor aitkin and dr  18 
of the paper by  18 
by professor aitkin and  18 
aitkin and dr longford  18 
discussion of the paper  18 
paper by professor aitkin  17 
for the complete sample  13 
the school variance component  9 
estimate rank estimate rank  8 
per cent of the  7 
and for the comprehensives  6 
the complete sample and  6 
rank estimate rank estimate  6 
the two grammar schools  6 

Top Keyterms
Keyterm 
Weight 
school  2.0 
model  1.995 
variance  1.989 
sample  1.989 
variable  1.988 
intake  1.986 
pupil  1.985 
regression  1.983 
score  1.983 
estimate  1.982 
component  1.981 
fit  1.981 
effectiveness  1.981 
fitting  1.981 
complete  1.98 
