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
»
