题目
A leisure centre has 2500 members. It asks a sample of 300 members for their opinions on the fees it charges for using the centre.
(a) State one characteristic of a population that would make a census a practical alternative to sampling.
For the sample,
(b) (i) identify a suitable sampling frame,
(ii) identify a sampling unit.
The leisure centre has the following pieces of information. A is the list of the different types of membership that can be paid for by members. B is the mean of the membership fees paid by all 2500 members. C is the number in the sample of 300 members who are satisfied with the fees they pay.
(c) State the piece of information that is a statistic. Give a reason for your answer.
(Total for Question 2 is 4 marks)
题目中文翻译
一家休闲中心有 2500 名会员。 它向 300 名会员抽样调查他们对中心收费的意见。
(a) 说明人口具有哪一种特征会使普查成为抽样的实际替代方案。
对于该样本，
(b) (i) 识别一个合适的抽样框架，
(ii) 识别抽样单位。
休闲中心有以下信息。 A 是会员可支付的不同会员类型列表。 B 是所有 2500 名会员所支付会费的平均值。 C 是样本中 300 名对收费满意的会员人数。
(c) 说明哪一项信息是统计量。 并给出理由。
（第 2 题共 4 分）