Threshold (การก าหนดเกณฑ์ขั้นต ่า): A threshold is defined or
derived from a range of values against which a KPI is
assigned a status. Typically, two thresholds are defined that
specify three ranges; however, any number of thresholds and
corresponding statuses can be defined.
• Thresholds can be simple numbers, but they may also be
complex expressions that enable thresholds to vary over time
and in response to external factors. The order of the ranges is
important when determining KPI status. The KPI value is
checked against each range, in order, until one is found that
contains the KPI’s value the name of the matching range
provides the KPI’s status.