The Statistics Aplet - Univariate Data - HP 39gs Master Manual

T S
T S
H E T A T I S T I C
H E T A T I S T I C
One of the major strengths of the hp 39gs & hp40gs is the tools they provide for dealing with statistical data.
The Statistics aplet and its companion the Inference aplet provide very powerful yet easy to use tools with
which to analyze statistical data.
The calculator treats univariate and bivariate data quite differently and those differences are reflected in the
and views. Because of this the Statistics chapter has been split into two and univariate data will
SYMB PLOT
be dealt with first.
When you press
value. The view is reserved for specifying which columns contain data and which columns frequencies
SYMB
or, in the case of bivariate data, for indicating pairing of columns. If you have not already done so, go to the
view, highlight,
APLET
Uni-variate vs. Bi-variate data
On the screen you will see a key labeled either
Pressing the key under this label changes from univariate (
bivariate ( ) and back. Make sure the key is showing
before proceeding.
Clearing data
If your view had some data in it, you could press
NUM
) and choose All columns. The
DEL
data points, rather than whole columns.
Let's use the following set of data and obtain all the usual statistics on it, and also plot a histogram and a box
& whisker graph.
{ 2, 3, 1, 0, -2, 3, 4, 2, 2, 0, 6, 2, 3, 1, 0, 4, 1, 3, 3, 2 }
Move the highlight into column
key after each piece of data.
ENTER
Looking at the bottom of the calculator screen you will see a series of tools provided for you.
really worth bothering with because it is generally easier just to retype a number than it is to press
then use the arrow keys and
A - U
A - U
S P L E T N I
S P L E T N I
the Statistics aplet initially opens in the
and then
key is used to delete individual
DEL
and enter the data, pressing the
C1
to change it.
DEL
D
D
V A R I A T E A T A
V A R I A T E A T A
view, offering easy input and editing of
NUM
the Statistics aplet.
or .
) to
(above
CLEAR
114
18
is not
and