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Annex G Issues Related to Sampling
Pages 61-62

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From page 61...
... (Based on data from 1983 to 1993, which show 2/3 of all Phase II awards went to firms with four or less awards and a roughly exponential distribution where firms with a single award were most common, followed by firms with two etc.) These are the hardest firms to find; address information is perishable, thus response rate is much lower.
From page 62...
... The database itself can group surveys that came from multiple winners once we establish how many awards we use as a cutoff for that designation. How many surveys: I estimate that if the random sample were 20 percent, this approach would generate about 5000 to 5500 project surveys and about 3000 firm surveys, assuming each firm that received at least one project survey also received a firm survey.


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