Sharp EL-9650 - Page 201

191
STATISTICS/ REGRESSION CALCULATIONS
for US
[01 pdfnorm(]: Finds the probability density of a specified value x for the normal
distribution N(µ, σ
2
)(cannot be input using lists).
Format: pdfnorm (value of x, mean, standard deviation) However, mean (µ) and
standard deviation (σ) may be omitted. (When omitted, µ=0 and σ=1.)
<Example 1>
Find the normal distribution probability density for x = 65 when the normal distribution of
test scores averages 60, with a standard deviation of 6.
Key operation:
F 0 1 65 , 60 , 6 ) ®
[02 cdfnorm(]: Calculates the normal distribution probability of a specified range x for
normal distribution N (µ, σ
2
)(cannot be entered using lists).
Format: cdfnorm (lower value, upper value, mean, standard deviation) However the
mean and standard deviation may be omitted. (When omitted, µ=0 and σ=1.)
<Example 2>
Calculate the probability of range “x = 54 to 66” in example 1.
Key operation:
F 0 2 54 , 66 , 60 , 6 )
®
[03 InvNorm (]: Finds the value of x of a given normal distribution probability (cannot
be entered using lists).
Format: InvNorm (probability, mean, standard deviation) However, the mean and
standard deviation may be omitted. (When omitted, µ=0 and σ=1.)
,,
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EL-9650-(07)En (178-196) 8/1/00, 9:08 AM191