HP LC2000r - NetServer - 128 MB RAM Spécifications télécharger pdf (Page 11)

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

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