Background Information 2 1.Polls of public opinion 9 3 IME T . 65 1)Public opinion poll:a method of learning what people think and I how they feel about a wide variety of subjects 2)Two sampling methods: random and quota sampling Background Information 1. Polls of public opinion 1) Public opinion poll: a method of learning what people think and how they feel about a wide variety of subjects 2) Two sampling methods: random and quota sampling