20070201
k Normal Distribution
u Normal Probability Density
Normal probability density calculates the probability density of nomal distribution from a
specifi ed x value. Normal probability density is applied to standard normal distribution.
(
σ
> 0)
Perform the following key operations from the statistical data list.
5 (DIST)
1 (NORM)
1 (Npd)
Data is specifi ed using parameter specifi cation. 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 specifi es 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
πσ
2
(x) =
1
e
–
2
2
σ
(x – μ)
2
μ
πσ
2
(x) =
1
e
–
2
2
σ
(x – μ)
2
μ
# 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
