
The Basics of Measurement ◾ 45
mass and volume; we then use a model to show us that the relationship
between the three is
Density = Mass/Volume
Similarly, the speed of a moving object is most accurately measured
using direct measures of distance and time. us, direct measurement
forms the building blocks for our assessment, but many interesting attri-
butes can be measured only by derived measurement.
e following direct measures are commonly used in soware
engineering:
• Size of source code (measured by LOC)
• Schedule of the testing process (measured by elapsed time in hours)
• Number of defects discovered (measured by counting defect ...