Program Title: AVERAGE, VARIANCE
AND
STANDARD
DEVIATION
OVERVIEW
If
the
data
are
input,
the
total
sum, average, variance, and standard deviation will be calculated
for
you.
Revision
of
input
data,
as well
as
data
with
weights,
is
possible.
CONTENTS
Total
sum
Average
Variance
~xi·fi
~Xi·
fi
X =
--'--'--'--
~fi
0
2
=
~(Xi
~
X)fi
~fi-l
Standard
deviation 0 = ..j7;2
Number
of
data
entries (up
to
50)
(when
there
are no weights
fi
= 1)
INSTRUCTIONS
1.
At
@ W ,select
whether
or
not
there
are any weights,
then
input
the
data.
2.
@ W
is
used
to
find any revision positions
in
the
data. @ W
is
used
to
revise
the
data.
3.
The
total
sum,
average, variance,
and
standard
deviation will be calculated with @
CQJ
.
EXAMPLE
I--J:---'~l'---'
1_:_.1
~-;-.2-----~-:-.3-----~-:-.4-----~-~.-5--
248
(data with weights)
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