Casio fx-9860G SD - Manual (Page 349)

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k k k k k Normal Distribution
u u u u u Normal Probability Density
Normal probability density calculates the probability density of nomal distribution from a
specified
x value. Normal probability density is applied to standard normal distribution.
πσ
2
f (x) =
1
e
–
2 2 σ
(x – µ )
2 µ
(
σ > 0)
Perform the following key operations from the statistical data list.
5(DIST)
1(NORM)
1(Npd)
Data is specified using parameter specification. The following shows the meaning of each
item.
x .................................. data
σ .................................. standard deviation (σ
> 0)
µ .................................. mean
Save Res .................... list for storage of calculation results (None or List 1 to 26)
Execute ....................... executes a calculation or draws a graph
• Specifying
σ = 1 and µ = 0 specifies standard normal distribution.
After setting all the parameters, use c to move the highlighting to “Execute” and then press
one of the function keys shown below to perform the calculation or draw the graph.
• 1(CALC) ... Performs the calculation.
• 6(DRAW) ... Draws the graph.
Calculation Result Output Example
p .................................. normal probability density
# V-Window settings for graph drawing are set
automatically when the Setup screen's [Stat
Wind] setting is [Auto]. Current V-Window
settings are used for graph drawing when the
[Stat Wind] setting is [Manual].
6-7-3
Distribution