Texas Instruments TI-30Xa Solar Find the sum, mean, population standard deviation, and sample standard deviation, , and then correctly entered as 80.

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