10
Ti30xa School Edition.doc TI-30Xa SOLAR School Edition
Bob Fedorisko Revised: 05/16/03 9:26 AM Printed:
05/16/03 9:32 AM Page 10 of 23
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