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Distribution Command List
k
Normal Distribution
Normal Probability Density
Menu: [Distribution]-[Normal PD][Distribution]-[Normal PD]Normal PD]]
Description: This command calculates the probability density of normal distribution from a
specified
x
value. Normal probability density is used for normal distribution.
(
σ
> 0)
Definition of Terms
x
: data value
σ
: population standard deviation (
σ
> 0)
μ
: population mean
Specifying
σ
= 1 and
μ
= 0 produces standard normal distribution.
Calculation Result Output
prob
: normal probability density
Example
Data : 37.5
Population standard deviation : 2
Population mean : 35
• Statistics Wizard Operation
(1) On the menu bar, tap [Calc] and then [Distribution].
(2) Select [Normal PD] and then tap [Next >>].
(3) Input values.
(4) Tap [Next >>].
(5) To display the graph, tap
$
.
u
Program, eActivity or Main Application
Command: NormPD
Command Syntax
x
value,
σ
value,
μ
value
Input Example:
NormPD 37.5,2,35
7-11-3
Distributions
πσ
2
f
(x) =
1
e
–
2
2
σ
(x – µ)
2
µ
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