Casio fx-9750G PLUS - Manual (Page 333)

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k k k k k Normal Distribution
You can use the following menu to select from the different types of calculation.
• { Npd}/{Ncd}/{InvN} ... {normal probability density}/{normal distribution
probability}/{inverse cumulative normal distribution} calculation
u u u u u Normal probability density
Normal probability density calculates the probability density of normal distribution
from a specified
x value. Normal probability density is applied to the 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
Execute .......... executes a calculation or draws a graph
• Specifying σ = 1 and µ = 0 specifies standard normal distribution.
Example To calculate the normal probability density for a specific
parameter value
For this example, we will calculate the normal probability
density when
x = 36, σ = 2 and µ = 35.
dgw
cw
dfw
1 (CALC)
p ( x ) ................. normal probability density
Distribution
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