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Sharp EL-506P - Page 57

Sharp EL-506P
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•
To
clear
previous
statistical
inputs
and
calculation
press
the
~
and
rn
keys.
Then
set
the
mode
by
pressing
the
~
and
rn
keys again.
• Reset
of
the
statistical
calculation
mode
can be made
by
the
~
and
rn
keys.
Calculate
the
following
statistics.
(
1)
n:
Number
of
samples
(2)
Ex:
Total
of
samples
Ex
(3)
x:
Mean value
of
samples ( x =
--
(4)
Ex':
Sum
of
squares
of
samples n
(5) s:
Standard
deviation
with
population
parameter
taken
to
be
"n-1".
j
Ex
1
-
nx
1
s =
n - 1
(Used
to
estimate
the
standard
deviation
of
population
from
the
sample
data
extracted
from
that
population
.)
55

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