HP 35s User Manual page 320

4. The display shows n the number of statistical data pairs you have
accumulated.
5. Continue entering x, y–pairs. n is updated with each entry.
If you wish to delete the incorrect values that were just entered, press
After deleting the incorrect statistical data, the calculator will display the last
statistical data entered in line 1 (top line of the display) and value of n in line 2. If
there are no statistical data, the calculator will display n=0 in line 2.
Example:
After keying in the x, y–values on the left, make the corrections shown on the right:
Keys:
C-12
ALG: Summary
Initial x, y
20, 4
400, 6
Display:
(4Σ)
Σ
Σ
Σ
Σ
Σ
Σ
Corrected x, y
20, 5
40, 6
Description:
Clears existing statistical data.
Enters the first new data pair.
Display shows n, the number of data
pairs you entered.
Brings back last x–value. Last y is still
in Y–register.
Deletes the last data pair.
Reenters the last data pair.
Deletes the first data pair.
Reenters the first data pair. There is
still a total of two data pairs in the
statistics registers.
.