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Keystrokes
Display
12
9
-9.
4.0000
5
24
-24.
5.0000
2
-2.0000
29
6.0000
9
-9.0000
35
7.0000
-21.5714
X%y
5.2857
8.7912
X%y
8.2808
Deleting and Correcting Data
Number of pairs is now 7
(n = 7).
Average low temperature
(mean of x) is in displayed
X-register.
Average high temperature
(mean of y) is placed in the
displayed X-register.
Standard deviation of low
temperatures (x values)is in
the displayed X-register.
Standard deviation of high
temperatures (y values) is
placed in the displayed
X-register.
If you key in an incorrect value and have not executed (Z4], press
to delete the incorrect number or digits, then key in the correct
number.
If one of the values is changed, or if you discover that one of the values
is in error after you have executed the
function, you can correct
the summations by using the
(summation minus) function as follows:
1.
Key the incorrect data pair into the X- and Y-registers. (You
can use
to return a single incorrect data value to the
displayed X-register.)
2.
Press |~ to delete the incorrect data.
Key in the correct values for x and y. (If one value of an x, y
data pairis incorrect, both values must be deleted and reentered.)
4.
Press
i
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