NeoCal User Guide
Statistical Registers
This application uses the statistical registers and performs one-
and two-variable statistical calculations such as mean, standard
deviation, and linear regression. The statistical registers are
represented by the
,
,
,
,
, and
buttons. However,
these registers are not modified using the
button, rather, data is accumulated into these registers by using:
-
to clear the statistical registers.
-
to accumulate a data point into the
statistical registers. The data point can be either a single x
value or an (x, y) pair. The number of accumulated data points is displayed.
-
to remove a data point from the statistical
registers. This is useful for correcting mistakes.
The accumulated statistics can be recalled by simply pressing these buttons:
-
recalls the number of data points accumulated.
-
recalls the summation of the x values.
-
recalls the summation of the squares of the x values.
-
recalls the summation of the y values.
-
recalls the summation of the squares of the y values.
-
recalls the summation of the products of the
x and y values.
-
recalls the summation
of the x values into the x register and the summation of the y
values into the y register.
Let's enter some data,
- Press
to clear the statistical registers.
- Press
to accumulate the first data point.
- Press
to
accumulate the second data point.
- Press
to accumulate the third data point.
- Press
to accumulate the fourth
data point.
- Press
to recall the sum of the x values (245).
- Press
to recall the sum of the squares of
the x values (17,725).
- Press
to recall the number of accumulated
data points.