HP 49g+ Graphing Calculator Instrukcja Użytkownika Pobierz pdf (Strona 158)

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The form lists the data in ΣDAT, shows that column 1 is selected (there is only

one column in the current ΣDAT). Move about the form with the arrow keys,

and press the @CHK@ soft menu key to select those measures (Mean, Standard

Deviation, Variance, Total number of data points, Maximum and Minimum

values) that you want as output of this program. When ready, press @@@OK@@.

The selected values will be listed, appropriately labeled, in the screen of your

calculator. For example:

Sample vs. population

The pre-programmed functions for single-variable statistics used above can be

applied to a finite population by selecting the

Type: Population in the

SINGLE-VARIABLE STATISTICS screen. The main difference is in the values

of the variance and standard deviation which are calculated using n in the

denominator of the variance, rather than (n-1). For the example above, use

now the @CHOOS soft menu key to select population as Type: and re-calculate

measures:

1 2 ... 153 154 155 156 157 158 159 160 161 162 163 ... 174 175

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