Statistical Calculations 115
Figure 3
When the calculator switches to register-based mode, some key points to consider:
•
You may enter an unlimited number of data points.
•
The statistics editor, accessed with
v¡
, is not available.
•
While use of
\¢
is allowed, viewing previously entered data is not possible.
•
The only regression mode available is a linear regression.
One-Variable Statistics
To enter
x
-data for one-variable statistics complete the following steps:
1. Clear the statistical registers by pressing
\t
.
2. Enter the first value and press
¡
. The HP 10bII+ displays
n
, the number of items
accumulated.
3. Continue accumulating values by entering the numbers and pressing
¡
. The
n
-
value
is increased with each entry.
Two-Variable Statistics and Weighted Mean
To enter
x
,
y
pairs of statistical data complete these steps:
1. Clear the statistical registers by pressing
\t
.
2. Enter the first
x
-value and press
Æ
. The HP 10bII+ displays the
x
-value.
3. Enter the corresponding
y-
value and press
¡
. The HP 10bII+ displays
n
, the number
of pairs of items accumulated.
4. Continue entering
x
,
y
pairs. The
n
-value is increased with each entry.
To enter data for calculating the weighted mean, enter each data value as
x
, and its
corresponding weight as
y
in the statistics memory.
Press
\T
to calculate the weighted
mean.
Содержание 10bII+
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Страница 144: ...Statistical Calculations 136 ...
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