Casio FX-7400G User Manual page 107

Statistical Graphs and Calculations Chapter 7
k k k k k Normal Distribution Curve
The normal distribution curve is graphed using the following normal distribution func-
tion.
2
( x–x )
1
–
y = e
2
2x"
n
(2 !) x"
n
The distribution of characteristics of items manufactured according to some fixed
P.99 standard (such as component length) fall within normal distribution. The more data
(G-Type) items there are, the closer the distribution is to normal distribution.
(N•Dis)
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 k k k 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 2 3 4
1 (1VAR) ..... Single-variable calculation result menu
Pressing 1 (1VAR) displays the following screen.
1(1VAR)
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