HP 49g Graphing Calculator User Manual
Page 169
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Chapter 9
Using statistics
Contents
Descriptive statistics...................................................................................... 9-2
Starting an application and specifying the data................................. 9-2
Single-variable statistics.......................................................................... 9-3
Generating frequencies.......................................................................... 9-4
Fitting a model to a set of data............................................................. 9-5
Calculating siuranaiy statistics................................................................9-6
Plotting statistics...................................................................................... 9-7
Inferential statistics........................................................................................ 9-7
Example data............................................................................................9-7
Using inferential statistics........................................................................9-8
Hypothesis tests.......................................................................................9-9
Confidence intervals..............................................................................9-15
Introduction
This chapter describes how to use the HP 49G to analyze data statistically.
You can use the HP 49G to analyze two broad categories of statistics:
* Descriptive statistics enables you to calculate values such as the
mean, the variance, and the standard deviation. You can also apply
regression techniques to the data to fit a symbolic model to it.
® Inferential statistics enables you to calculate values such as
confidence intervals. You can also perfonn hypothesis tests based on
the Normal Z- and Student’s t-distributions.
The inferential statistics applications includes online help. On any of
the inferential statistics screens, press
HELP
to display help on how to
complete the screen.
Using statistics
Page 9-1