Assuming that this represents a distribution of GJTScore, the first thing
tells us is that the full range of GJTScore between under 15 and over 15 are
quite large, for the under 15 group which is extending from approximately from
170 on the low end to approximately to 199 on the high end. Secondly, we can
see that more people got the GJTScore toward the higher than the higher end
of the range. It is closer to the top of the range than the bottom. Half of the
subjects got between 186 and 196, which is definitely skewed toward the lower
end of the overall range. The 25% of the subjects who got the lowest
GJTScore are grouped closely together across a relatively 9 points distance
compare to the median 195.
For the over 15 group which is extending from approximately from 137 on
the low end to approximately to 152 on the high end. Secondly, we can see
that more people got the GJTScore toward the lower than the higher end of the
range. Half of the subjects got between 137 and 152, which is definitely
skewed toward the lower end of the overall range. The 25% of the subjects
who got the lowest GJTScore are grouped together across a relatively 6 points
distance compare to the median 143.