Specifications

11
Figure 6
Setup of custom expressions
Figure 5
Summary statistics
Performing statistics
calculations
The user may optionally select to
have statistical calculations per-
formed on the (numerical) data
which is being reviewed, as shown
in figure 5. This can be achieved
using summary statistics that cal-
culates statistical values based on
a single column of numerical val-
ues. The calculated values are:
• number
• minimum
• maximum
• sum
• mean
• variance
• standard deviation
• relative standard deviation
In addition, Regression Statistics
can also be used to calculate
curves and statistics of two
numerical columns. Curve types
include:
• linear
• quadratic
• cubic
• logarithmic
• exponential
• power
The curve parameters for the
curves and the residuals will be
calculated and displayed.
Residual and curves can also be
displayed in a chart.
Custom expressions
Mathematical calculations may be
performed on results using the
built-in expression definition
interface (figure 6).
This offers the basic expression
functions (addition, subtraction,
division and multiplication) plus
the following functions:
• exponential
• natural logarithm
• logarithm
• square
• square root