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Looking at the bottom of the screen you will see a series of tools provided for
you.
is not really worth bothering with. It is generally easier just to
retype a number than it is to press
and then use the arrow keys and
DEL
to change it.
Sorting data
The key labeled
inserts space for a new
number by shifting all the numbers down one
space.
does exactly what it says… it
sorts the data into ascending or descending
order. The extra fields in the screen shot right
are used with bivariate sorts or frequency
tables and will be explained in that section of the notes. Press
to stop
the sort.
The
key behaves normally and
vs.
we have already
discussed. The last key labeled
is the really useful one.
The STATS key
Making sure the highlight is in column C1,
press the
key and you will see the
screen shown right. If you use the down
arrow, you can scroll down and see the rest of
the screen (below right).
NOTE
: If you get an error message instead of
summary statistics, you may have
forgotten to
the aplet.
As you can see in the screens above right, the hp 39g+ gives not only the
standard statistics that any scientific calculator would give, but also the
minimum and maximum values, the median and the upper and lower quartile
cutoffs. The mode is not given, but this is easily obtained from the histogram
as we will see later.
