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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
ΣDAT. 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 »