HP 10bII+, Руководство пользователя

Страница: 122 / 187

Statistical Calculations 114
Clearing Statistical Data
Clear the statistical data before entering new data. If you don't clear the statistical data, new
information stored will be added to the current calculations. To clear all statistical data, press
\t
. The message STAT CLR flashes briefly and the display is cleared. The regression
model is also reset to its default setting, LINEAR .
Entering Statistical Data
The 10bII+ uses a combination of list-based and register-based statistics when storing
statistical data. List-based statistics store every value and permit you to review and edit entered
data. Register-based statistics accumulate information, but you cannot easily edit or review
this information.
On the 10bII+, there is always space reserved for up to 15 data points. In addition, up to 30
additional data points may be stored in memory shared with the cash flow memory. See
Figure 1.
Figure 1
As illustrated in Figure 1, if no more than 15 cash flows are stored in the cash flow memory,
you may store up to 45 data points for statistical usage.
If more than 15 cash flows are stored in the cash flow memory, the total memory available for
storing statistical data is reduced. For example, in Figure 2, there are 25 cash flows stored,
and the amount of available shared memory has therefore decreased by 10 slots.
Figure 2
If data storage in the calculator memory resembles Figure 2, and you have a statistical
calculation requiring more than 35 data points, clearing unneeded cash flow information will
free up more space for information. If there are more data points than available memory, the
10bII+ automatically switches to register-based statistics to allow continued work. When
available memory is reached, the FULL annunciator indicates there is not enough space to
continue saving data. See Figure 3.