
Section 4: Statistics Functions 51
(metric tons per
hectare), y
*A hectare equals 2.47 acres.
Clears statistical storage
registers (R
2
through R
7
and
the stack).
Limits display to two decimal
places, like the data.
Sum of x-values, Σx (kg of
nitrogen).
Sum of squares of x-values,
Σx
2
.
Sum of y-values, Σy (grain
yield).
Sum of squares of y-values,
Σy
2
.
Sum of products of x- and
y-values, Σxy.
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