Texas Instruments TI-30 eco RS User Manual page 8

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
as 80.
(if
45
55
60
8
8
80
(sum)
(mean)
(deviation, n weighting)
of a data point.
Enter data point, press
enter frequency (1–99), press
add or
Sum.
Sum of squares.
Mean.
Population standard deviation
(n weighting).
Sample standard deviation (n-1
weighting).
Number of data points.
is displayed)
STAT
3
(deviation, n-1 weighting)
8-ENG
to remove data points.
, and then correctly entered
n=
n=
n=
n=
n=
n=
,
to
1
4
5
6
5
6
350.
58.33333333
10.67187373
11.69045194