Casio fx-7400G PLUS Statistical Graphs and Calculations Manuale Utente Scaricare il pdf (Pagina 14)

108

Chapter 7 Statistical Graphs and Calculations

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k Normal Distribution Curve

The normal distribution curve is graphed using the following normal distribution func-

tion.

(2 π) xσ

–

2x σ

(

x –

)

The distribution of characteristics of items manufactured according to some fixed

standard (such as component length) fall within normal distribution. The more data

items there are, the closer the distribution is to normal distribution.

From the statistical data list, press 1 (GRPH) to display the graph menu, press

[4 (SET), and then change the graph type of the graph you want to use (GPH1,

GPH2, GPH3) to normal distribution.

k Displaying Single-Variable Statistical Results

Single-variable statistics can be expressed as both graphs and parameter values.

When these graphs are displayed, the menu at the bottom of the screen appears as

below.

1 (1VAR) ...... Single-variable calculation result menu

Pressing 1 (1VAR) displays the following screen.

1(1VAR)

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Casio fx-7400G PLUS Statistical Graphs and Calculations Manuale Utente Pagina 14