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2.4.6
Context Diagram
Highest level (most abstract) view of system
Shows system boundaries
System scope is represented by a single process, external agents, and all
data
flows into and out of the system.
DFD that summarizes all processing activity
2.5
MEDIA TERMINOLOGIES
Bellow are terminologies and parameter that will be used in the making of media review.
Mean - the sum of a group of quantities divided by the number of quantities in
the
group.
•
Advantage: consistent with the total set of numbers
•
Disadvantage: if extreme outliers exist, the mean may not represent
trends accurately.
Median - the number that occupies the middle position when numbers are
arranged in their natural order of progression.
Mode - the number that occurs most frequently in a set of numbers. If no
number occurs more than once, no mode exists
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