Graphics Reference
In-Depth Information
Figure
.
.
A barchart of the number of records by US region
Figure
.
.
A histogram of the number of records per year
he manufacturing sector clearly dominates. To check for associations between the
two classifications, a crude scatterplot approach was tried. Afairly random spread of
points was obtained, but no particular pattern.
Histogramscan bedrawnforthe continuous variables, butthey take upquite alot
of room, so boxplots are more e
cient at displaying many variables at once. Since
logTA, the log of total assets, is a different kind of variable from the others and im-
portant in its own right too (because it groups the companies by size), a histogram
has been drawn specifically for it (see Fig.
.
). his shows a roughly symmetric dis-
tribution with afewverylowvalues.Selecting theforeignregisteredcompanies again
and linking to a spinogram of logTA reveals that for the
% of the companies that
arethebiggest,thepercentageofforeignregisteredcompanies rosesteadily,from
%
up to more than
%.
