Waste and Hazardous Materials
The data for this survey report were collected for the NFIB Research Foundation by the executive interviewing group of The Gallup Organization. The interviews for this edition of the Poll were conducted between April 27 - May 10, 2007 from a sample of small employers. “Small employer” was defined for purposes of this survey as a business owner employing no fewer than one individual in addition to the owner(s) and no more than 249.
The sampling frame used for the survey was drawn at the Foundation’s direction from the files of the Dun & Bradstreet Corporation, an imperfect file but the best currently available for public use. A random stratified sample design is typically employed to compensate for the highly skewed distribution of small-business owners by employee size of firm (Table A1). Almost 60 percent of employers in the United States employ just one to four people meaning that a random sample would yield comparatively few larger small employers to interview. Since size within the small-business population is often an important differentiating variable, it is important that an adequate number of interviews be conducted among those employing more than 10 people. The interview quotas established to achieve these added interviews from larger, small-business owners are arbitrary but adequate to allow independent examination of the 10-19 and 20-249 employee size classes as well as the 1-9 employee size group.
Sample Composition Under Varying Scenarios
Expected from Random Sample* Obtained from Stratified Random Sample
Employee Percent Percent Percent
Size of Interviews Distri- Interview Distri- Completed Distri-
Firm Expected butions Quotas bution Interviews bution
1-9 593 79 350 47 350 46
10-19 82 11 200 27 200 27
20-249 75 10 200 27 201 27
All Firms 750 100 750 101 751 100
* Sample universe developed from special runs supplied the NFIB Research Foundation by the Bureau of the Census (1997 data).