In the Personal Computer (PC) Market in the First Half

question 211

Multiple Choice

In the personal computer (PC) market in the first half of 2008, Hewlett-Packard maintained its worldwide No. 1 ranking at a market share of 19.1 percent. Dell's market share was 16 percent, Acer held onto third place with a 9.5 percent share, and Lenovo maintained fourth place with a 7.9 percent share. Predict the range of the Herfindahl-Hirschman Index for the PC market.

• A) 0 - 100
• B) 100 - 999
• C) 10,000
• D) 800 - 1,200

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Definitions:

Difference Threshold

A measure of the smallest increase or decrease in a physical stimulus that is required to produce a difference in sensation that is noticeable 50% of the time.

Psychophysical Threshold

The minimum level of stimulus intensity perceived by the sensory system.

Just Noticeable Difference

The smallest difference in stimulation required to detect a change in sensory inputs, also known as the difference threshold.

Detectable Difference

The minimum change in a stimulus that can be correctly identified as different from a reference stimulus a certain proportion of the time.