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16–16 Statistics Programs
File name 32sii-Manual-E-0424
Printed Date : 2003/4/24 Size : 17.7 x 25.2 cm
Example 1:
Your good friend informs you that your blind date has "3
σ
" intelligence. You
interpret this to mean that this person is more intelligent than the local
population except for people more than three standard deviations above the
mean.
Suppose that you intuit that the local population contains 10,000 possible
blind dates. How many people fall into the "3
σ
" band
?
Since this problem is
stated in terms of standard deviations, use the default value of zero for M and
1 for S.
Keys: Display: Description:
W
S
@)
Starts the initialization routine.
f
@)
Accepts the default value of zero
for M.
f
)
Accepts the default value of 1 for
S.
W
D
%@
value
Starts the distribution program and
prompts for X.
3
f
/)
Enters 3 for X and starts
computation of Q(X). Displays the
ratio of the population smarter than
everyone within three standard
deviations of the mean.
10000
y
)
Multiplies by the population.
Displays the approximate number
of blind dates in the local
population that meet the criteria.
Since your friend has been known to exaggerate from time to tame, you
decide to see how rare a "2
σ
" date might be. Note that the program may be
rerun simply by pressing
f
.
Keys: Display: Description: