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Statistical Operations 12-11
Summation Values and the Statistics Registers
The statistics registers are six unique locations in memory that store the
accumulation of the six summation values.
Summation Statistics
Pressing gives you access to the contents of the statistics registers:
() to recall the number of accumulated data sets.
Press Õ () to recall the sum of the x–values.
Press
ÕÕ () to recall the sum of the y–values.
Press
ÕÕÕ (
), ÕÕÕÕ (
), and
ÕÕÕÕÕ () to recall the sums of the squares and the sum of
the products of the x and y — values that are of interest when performing
other statistical calculations in addition to those provided by the calculator.
If you've entered statistical data, you can see the contents of the statistics registers.
Press
(), then use × and Ø to view the statistics
registers.
Example: Viewing the Statistics Registers.
Use
to store data pairs (1,2) and (3,4) in the statistics registers. Then view the
stored statistical values.
Keys: Display: Description:
()
Clears the statistics registers.
Stores the first data pair (1,2).
Stores the second data pair (3,4).
()
Displays VAR catalog and views n
register.
×
views Σxy register.