random sample

Ask a random sample of music fans to name a living blues musician.

CAI says 170; my own tiny random sample and the 60 Minutes investigation indicate that there are probably a lot less.

Trying to study a tiny minority with a random sample--even a large one--is very difficult, and maybe impossible.

A national random-sample poll was conducted with the first and last names switched.

From each area of the State a random sample of villages with recorded house counts should be taken.

There is a tendency in taking samples to pick out the larger nuts or in some other way fail to take a good random sample.

In taking a random sample no selection as to size, uniformity, or any other quality should be made.

Since the birds were mostly netted, it is assumed that I obtained a random sample.