HP 50G, Руководство пользователя

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Page 18-1
Chapter 18
Statistical Applications
In this Chapter we introduce statistical applications of the calculator including
statistics of a sample, frequency distribution of data, simple regression,
confidence intervals, and hypothesis testing.
Pre-programmed statistical features
The calculator provides pre-programmed statistical features that are accessible
through the keystroke combination
‚Ù
(same key as the number
5
key).
The statistical applications available in the calculator are:
These applications are presented in detail in this Chapter. First, however, we
demonstrate how to enter data for statistical analysis.
Entering data
For the analysis of a single set of data (a sample) we can use applications
number 1, 2, and 4 from the list above. All of these applications require that
the data be available as columns of the matrix
Σ
DAT. This can be
accomplished by entering the data in columns using the matrix writer,
„²
.
This operation may become tedious for large number of data points. Instead,
you may want to enter the data as a list (see Chapter 8) and convert the list into
a column vector by using program CRMC (see Chapter 10). Alternatively, you
can enter the following program to convert a list into a column vector. Type the
program in RPN mode:
« OBJ 1 2 LIST ARRY »