144
As you can see on the right, the values of the
mean and standard deviation are given in the
screen to 12 significant digits.
If we now switch to the HOME view, we can recall these values and use them
in a calculation to find the upper and lower cut off points for acceptance of
data.
As you can see on the left, the range for
acceptance is -3.46 to 10.38, which makes the
value of 55 almost certainly an error.
There are two ways to obtain these values.
You can type them into the HOME view using
the ALPHA key, or you can use the VARS key
instead. If you press VARS and then the screen
key labeled then, assuming the
Statistics aplet is active, you will see the view
above right. Scroll down to the Stat-One
variables and then press the right arrow. This
puts you in the list (see right) of univariate
summary statistics. If you highlight one and
press ENTER then the variable name will be
pasted into the HOME view for use. People
often find it easier to simply type them.
Calculator Tip
The values of the mean and standard deviation retrieved
are those of the last set calculated. If you have more than
one set of data in the NUM view then firstly un all
except the one you want, and secondly press the
key in order to force a calculation of the values you want.
This ensures that the ones you retrieve in the HOME view
are the ones you want.
This technique can also be used for bivariate data in exactly the same
manner. You should ensure, as per the note above, that only the set of data
you want to use is ed and that have been displayed for it.
All the usual values are retrievable, with the exception that there is no way to
provided to retrieve the coefficients of the line of best fit, since they appear in
the SYMB screen rather than the
screen.
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