题目内容
抽样调查中，与研究样本含量主要相关的因素有
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普查的主要缺点有
整样抽样的特点有
现况研究中，常见的随机抽样方法有
[音频]S= Sellelr C= CustomerS: Good morning. ___________________?C: Good morning. Would you show me some typical Chinese souvenirs? I’d like to buy a gift formy wife.S: We’ve got plenty of silk scarves and silk dresses for you to choose from.C: The dress is very nice. _______________ is it ?S: Fifty-five US dollars.C: It’s a little more than I expected. Could you give me a _______________?S: I’d like to, but I’m afraid I can’t. You see, it’s already 5% off the regular price.C: Then I’m _________ I can’t afford it.S: Well, let me ask the manager if it’s all right… I’m sorry to have kept you waiting. The best wecan do is to give you a 10% discount.C: OK. I’ll _________.
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