11
TI30XAUS.DOC MURFE pruning Pat Hatcher Revised:
06/17/99 4:31 PM Printed: 06/17/99 4:32 PM Page 11 of 21
Find the sum, mean, population standard deviation, and
sample standard deviation
for the data set: 45, 55, 55,
55, 60, 80. The last data point is erroneously entered as
8, removed with
"
a
, and then correctly entered
as 80.
"
h
(if
STAT
is displayed)
45
4
n= 1
55
"
\
3
4
n= 4
60
4
n= 5
8
4
n= 6
8
"
a
n= 5
80
4
n= 6
"
c
(sum)
350.
"
]
(mean)
58.33333333
"
_
(deviation,
n
weighting)
10.67187373
"
^
(deviation,
n-
1 weighting)
11.69045194
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