Distribution
Distribution Command List
kNormal Distribution
Normal Probability Density
Command: NormPD
Description: This command calculates the probability density of normal distribution from a specified x value. Normal probability density is used for normal distribution.
f (x) = | 1 |
| e | – (x – ∝ )2 | (σ > 0) | |||
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| 2σ 2 |
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| 2πσ |
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Command Syntax
x value, σ value, ∝ value
Definition of Terms
x : data value
σ: standard deviation (σ > 0)
∝ : mean
Specifying σ = 1 and ∝ = 0 produces standard normal distribution.
Input Example:
NormPD 3,1,0
Calculation Result Output
prob : normal probability density
Normal Cumulative Distribution
Command: NormCD
Description: This command calculates the probability of normal distribution data falling between a and b.
a : lower boundary (Lower)
b : upper boundary (Upper)
Command Syntax
Lower value, Upper value, σ value, ∝ value
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