Attributes of time distributions

From the Base Data menu, choose > Distributions > Time.

The Time Distributions list opens.

Note: In lists, you can use the Attribute selection icon to show and hide attribute values (Selecting attributes and subattributes for columns of a list).

The list contains the following attributes:

Long name	Short name	Description
Number	No	Number of time distribution
Name	Name	Name of the time distribution
Type	Type	Type of distribution function: Empirical: Cumulative frequency function. Definition between lower limit and upper limit, with intermediate points in the curve Normal: Normal distribution. Definition between lower limit and upper limit, with mean value and standard deviation
Lower bound	Lower bound	Minimum duration in seconds
Upper bound	Upper bound	Maximum duration in seconds
Standard deviation	StdDev	Can only be changed for normal distribution: Dispersion of values between lower bound and upper bound
Mean	Mean	Can only be changed for normal distribution: Mean of values between lower bound and upper bound

Showing and editing dependent objects as relation

The attribute and attribute values of this base data type are shown in the list on the left, which consists of two coupled lists.

1. In the list on the left, click the desired entry.

2. On the list toolbar, in the Relations list, click > Data points.

The list on the right contains attributes and attribute values of base data objects allocated to the base data object selected in the list on the left (Using coupled lists):

Data points: Individual data point values of time distribution. You can insert data points for an empirical distribution. These data points are then displayed as intermediate points in the curve (Editing the graph of a function or distribution).
x: Dwell time (s) at data point in curve.
At data point 1: Minimum dwell time of selected time distribution
Dwell time of additional data points, if defined for the curve of empirical distribution
At last data point: Maximum dwell time of selected time distribution
FX (f(x)): Probability of dwell time x at data point
At data point 1: 0
If, for an empirical distribution, additional data points are defined for the curve: Values for probability of dwell time at data point x
At last data point: 1

Dwell time distribution is monotonically increasing. This is why each FX value must be greater than or equal to its preceding value.

3. Enter the desired data.

The data is allocated.