Mark Wickens

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SUMX / SUMY / SUMX2 / SUMY2 / SUMXY

[FX-870P/VX-4]

Purpose

Statistical sum functions for processed data.

Format

SUMX
SUMY
SUMX2
SUMY2
SUMXY

Example

PRINT SUMX
PRINT SUMXY

Explanation

Function Returns
SUMX Sum of X data
SUMY Sum of Y data
SUMX2 Sum of X squared data (sum of X^2)
SUMY2 Sum of Y squared data (sum of Y^2)
SUMXY Product sum of X and Y data (sum of X*Y)
  1. These functions return the accumulated sums from data entered using the STAT command.
  2. SUMY, SUMY2, and SUMXY require paired (X, Y) data to have been entered.
  3. All values return 0 after STAT CLEAR is executed.

See