A Prototype

question 53

Multiple Choice

A prototype

• A)is expensive to create and is therefore only created once user needs are well-defined.
• B)is making an internal and external review of the system to be analyzed,noting that users may not use the existing AIS as intended.
• C)is typically created during the physical design phase of systems development.
• D)can be used to help users identify and communicate their system needs.

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Definitions:

Normal Curve

Another term for a normal distribution, characterized by its bell-shaped curve where most observations cluster around the central peak and the probabilities for values further away from the mean taper off equally in both directions.

Mean

The arithmetic average of a set of values, found by dividing the sum of all values by the number of values.

Median

The midpoint in a set of values, such that 50% of the cases in a distribution fall below the median and 50% fall above it.

Mode

The most frequently occurring score in a distribution.