"It's like having people over in your living room to watch it. It's much more exciting than watching by yourself, but you don't have random idiots throwing beers around."

VOA: standard.2010.07.01

Right. Another way of saying it is there isn't random assignment of the subjects to the two conditions in the study.

换种方式说,受试者并不是随机安排在,这个研究中的两种情况下。

耶鲁公开课 - 心理学导论课程节选

The problem is that people in the room aren't going to choose at random.

问题是教室里的人并不会随机选择

耶鲁公开课 - 博弈论课程节选

Fraternity President Paul Happel says he and his brothers aren't about random drunken hookups, either.

NPR: From Togas to Yoga: Fraternities Try to Alter Image

"It wasn't a random attack, " Lafreniere said.

CNN: STORY HIGHLIGHTS

That wasn't just some random number that I plucked out of a hat.

WHITEHOUSE: Presidential Press Conference