Obtaining Frequency Distributions - HP 50g User Manual

The range of the sample is the difference between the maximum and minimum
values of the sample. Since the calculator, through the pre-programmed
statistical functions provides the maximum and minimum values of the sample,
you can easily calculate the range.
Coefficient of variation
The coefficient of variation of a sample combines the mean, a measure of
central tendency, with the standard deviation, a measure of spreading, and is
defined, as a percentage, by: V
Sample vs. population
The pre-programmed functions for single-variable statistics used above can be
applied to a finite population by selecting the
SINGLE-VARIABLE STATISTICS
the variance and standard deviation which are calculated using n in the
denominator of the variance, rather than (n-1).
Example 3 -- If you were to repeat the exercise in Example 1 of this section,
using
Population
values for the mean, total, maximum, and minimum. The variance and
standard deviation, however, will be given by: Variance: 0.852, Std Dev:
0.923.

Obtaining frequency distributions

The application
frequency distributions for a set of data. Again, the data must be present in the
form of a column vector stored in variable DAT. To get started, press
‚Ù˜ @@@OK@@@. The resulting input form contains the following fields:
:
DAT
:
Col
:
X-Min
:
Bin Count
:
Bin Width
x
rather than
Sample
2. Frequencies..
the matrix containing the data of interest.
the column of DAT that is under scrutiny.
the minimum class boundary (default = -6.5).
the number of classes(default = 13).
the uniform width of each class (default = 1).
= (s / x)100.
x
Type: Population
screen. The main difference is in the values of
as the
Type
in the STAT menu can be used to obtain
, you will get the same
in the
Page 18-5