The Data for the Number of Hand-Held Gaming Devices Sold

question 38

Multiple Choice

The data for the number of hand-held gaming devices sold for the past 5 weeks are 15 units, 20 units, 25 units, 30 units, and 17 units respectively. The time series appears to be relatively stable, without trend, seasonal, or cyclical effects; thus, a moving average model would be appropriate. Setting k = 3 the three-period moving average forecast for week 6 is .

• A) 20 units
• B) 24 units
• C) 30 units
• D) 17 units

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Definitions:

Content Validity

The degree to which a test or instrument covers the representative breadth of the topic or construct it is intended to measure.

Construct Validity

The degree to which a test measures what it claims to be measuring, indicating the test's accuracy in assessing theoretical constructs.

Content Validity

Refers to the extent to which a test measures all aspects of the content it's intended to cover.

Concurrent Validity

The extent to which test scores correlate with scores of an established test of the same construct administered at the same time.