Entering
One-Variable
Data
1. Press Bl
clear
I
{2}
to clear previous statistical data.
2. Key in each x-value and press Is+l.
3. The display shows n, the number of statistical data values now
accumulated.*
To
recalla valueto the display immediately after it has been entered,
press Hi
lastx
|.
Entering
Two-Variable
Data
When your data
consistvof
two variables, x is the
independent
variable
and y is the
dependent
variable.
Remember
to enter an
(x,
y) pair in
reverse order so that y ends up in the Y-register and x in the X-
register.
1. Press Hi
clear
I
{2}
to clear previous statistical data.
2. Key in the y-value first
and
press I
enter
I.
3.
Key
in the corresponding
x-value
and press Is+l.
4. The display shows n, the number of statistical data pairs now
accumulated.
5. Continue entering x,y-pairs. The n-value is updated with each
entry.
To recall an x-value to the display immediately after it has been en
tered, press
Si
last* |.
*This procedureactually enters two
variables
into the statistics
registers
because the value
already in the Y-register is accumulated as the y-value. For this reason, the calculator will
do
linear
regression
and show you
values
basedon y even when you have enteredonly x-
data—or even if you have entered an unequal number of x- and y-values. No error
occurs,
but the results are obviously not meaningful.
154
11:
Statistical
Operations
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