random sample

• n. 随机抽样调查

英英释义

Noun:

1. a sample in which every element in the population has an equal chance of being selected

2. a sample grabbed at random

例句

用作名词 (n.)

1. The opinion poll was based on a random sample of adults.
   这次民意测验结果是在对成年人的随机抽样调查基础上得出来的。