Obtaining Additional Summary Statistics - HP 49g+ User Manual

Level 3 shows the form of the equation. Level 2 shows the sample correlation
coefficient, and level 1 shows the covariance of x-y. For definitions of these
parameters see Chapter 18 in the User's Guide.
For additional information on the data-fit feature of the calculator see Chapter
18 in the User's Guide.

Obtaining additional summary statistics

The application 4.
S u m m a r y s t a t s . .
calculations for sample statistics. To get started, press
move to the fourth option using the down-arrow key
The resulting input form contains the following fields:
the matrix containing the data of interest.
D A T :
these options apply only when you have more than two
X - C o l , Y - C o l :
columns in the matrix
column 1, and the y column is column 2. If you have only
one column, then the only setting that makes sense is to have
1
X - C o l :
: summary statistics that you can choose as results of this
_ X _ Y ...
program by checking the appropriate field using [ CHK]
when that field is selected.
Many of these summary statistics are used to calculate statistics of two
variables (x,y) that may be related by a function y = f(x). Therefore, this
program can be thought off as a companion to program
As an example, for the x-y data currently in DAT, obtain all the summary
statistics.
To access the summary stats... option, use:
Select the column numbers corresponding to the x- and y-data, i.e., X-Col:
1, and Y-Col: 2.
Using the key select all the options for outputs, i.e., _ X, _ Y, etc.
@ C H K @
in the STAT menu can be useful in some
DAT. By default, the x column is
.
‚ Ù
once more,
˜
, and press
@ @ @ O K @ @ @
3 . F i t d a t a . .
‚ Ù ˜ ˜ ˜
@ @ @ O K @ @ @
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