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Question

Why should the "worst case value" for a usability attribute be no lower than the "now level"?

a.

To ensure that the new product provides some improvement over the current state.

b.

To set a clear distinction between acceptable and unacceptable measurements.

c.

To determine the best possible measurement given the current state of development tools.

d.

To provide a target value for the attribute in the design.

Answer: (a).To ensure that the new product provides some improvement over the current state. Explanation:The "worst case value" should be no lower than the "now level" to ensure that the new product provides some improvement over the current state of affairs.

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Q. Why should the "worst case value" for a usability attribute be no lower than the "now level"?

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