Distribution Functions - Sharp EL-9900 Operation Manual

7. Distribution functions

The calculator has distribution features to find statistical calculations.
01 pdfnorm(
02 cdfnorm(
Chapter 10: Statistics & Regression Calculations
To enter the distribution menu,
1. Press S F (F DISTRI).
The distribution menu will appear.
2. There are 15 options in the
distribution menu. Press
' to navigate between
pages, and press { or
} to scroll the window.
3. Press E to select the function.
4. Input the specified values.
5. Press E to solve.
pdfnorm( value [, mean, standard deviation] )
Finds the probability density of the specified value x for the
normal distribution N(µ, σ
* When mean (µ) and standard deviation (σ) are omitted, µ = 0
and σ = 1 are applied.
Example
Find the nominal distribution
probability density for x = 65
when the normal distribution of
the test score averages is 60
with a standard deviation of 6.
cdfnorm( lower limit, upper limit [, mean, standard deviation] )
Calculates the normal distribution probability of a specified range
x for the normal distribution N(µ, σ
* When mean (µ) and standard deviation (σ) are omitted, µ = 0
and σ = 1 are applied.
Example
Calculate the probability of
range x = 54 to 66 in the above
sample.
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2
2
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