balanced sample

This is a pity, because I would love to know whether a balanced sample from the overall population would give the same responses.

"Meanwhile I suggest Myfair transports several more candidates to the ship so we will have a balanced sample from which to make our final selections."

Polltakers for Cambridge Reports, Inc., of Cambridge, Mass., visited 1,448 people representing a demographically balanced sample of Americans.

Mr. Oppelt said 150 buildings in Lower Manhattan and Brooklyn will form a spatially balanced sample, a technique used for testing environmental conditions on lakes, rivers and streams.

ICE texts would contain spoken and written English in a balanced sample of one million words per component so that these samples could be compared in a wide varieties of ways.

For a brief period in the mid-1990s, the programme used voting keypads to take a poll of the audience, who were stated to have been selected to provide a balanced sample compared with the nation as a whole.