6-7-3

Distribution

kNormal Distribution

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.

 

1

 

 

(x – ∝ )2

 

f (x) =

 

e

–

 

 

(σ > 0)

 

2σ 2

 

 

 

 

 

 

2πσ

 

 

 

 

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)

∝ ..................................

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 ∝ = 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

settings are used for graph drawing when the

 

 

 

 

automatically when the Setup screen's [Stat

[Stat Wind] setting is [Manual].

 

 

Wind] setting is [Auto]. Current V-Window

 

 

 

 

 

 

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