US agency Survey Sampling Inc. (SSI), sample consultant and product provider, has been named Supplier of the Year by the Gallup Organization. The award is presented for the highest levels of marketing ...
• SSI launched the modern day research sampling industry in 1977. • SSI is a rapidly growing global company with 13 offices in 11 countries. • Today SSI has an international team of more than 335 ...
A new telephone survey experiment finds that, despite major structural differences, an opinion poll drawn from a commercial voter file can produce results similar to those from a sample based on ...
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