8-ENG
30eco_eng_f_d_nl_fin.doc TI-30 eco RS, Config 1: Eng Deu
Fra Nld Bob Fedorisko Revised: 10/21/03 11:06 AM
Printed: 10/21/03 11:18 AM Page 8 of 80
of a data point.
Enter data point, press
"
\
,
enter frequency (1–99), press
4
to
add or
"
a
to remove data points.
"
c
Sum.
"
d
Sum of squares.
"
]
Mean.
"
_
Population standard deviation
(
n
weighting).
"
^
Sample standard deviation (
n
-
1
weighting).
"
b
Number of data points.
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
