HP 48gII Graphing Calculator Manual do Utilizador descarregar pdf (Página 572)

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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 »

1 2 ... 567 568 569 570 571 572 573 574 575 576 577 ... 863 864

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