Texas Instruments TI-30Xa Solar Manuale Utente
10
TI30XAUS.DOC MURFE pruning Pat Hatcher Revised:
06/17/99 4:31 PM Printed: 06/17/99 4:32 PM Page 10 of 21
06/17/99 4:31 PM Printed: 06/17/99 4:32 PM Page 10 of 21
One-Variable Statistics
"
h
Clears all statistical data.
4
Enters a data point.
"
a
Removes a data point.
"
\
Adds or removes multiple occurrences
of a data point.
Enter data point, press
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.