📚 IGCSE AQA Statistics: Case Study Practice | IGCSE AQA 统计：案例分析实战演练
Welcome to this case study practice session designed for IGCSE AQA Statistics. Through a realistic scenario involving survey data from secondary school students, we will walk through key statistical techniques, from data collection and presentation to probability, correlation, and interpretation. This hands-on guide will help you apply your statistical knowledge in exam-style questions.
欢迎来到本次 IGCSE AQA 统计案例分析实战演练。我们将通过一个真实的中学学生调查数据场景，逐步演练从数据收集、呈现到概率、相关性以及结果解读等关键统计技术。本实操指南将帮助你运用统计学知识应对考试题型。
1. Case Scenario and Data Set | 案例情景与数据集
A school conducts a survey of 50 randomly selected Year 11 students to investigate the relationship between the number of hours spent on physical exercise per week and their latest mathematics test score (%). The data collected also includes each student’s gender. The raw data are shown in the table below.
某学校随机抽取了 50 名 11 年级学生进行调查，旨在研究每周体育锻炼小时数与最近一次数学考试成绩（百分制）之间的关系。收集的数据还包括每位学生的性别。原始数据如下表所示。
Table 1: Raw Data (first 10 entries shown)
表1：原始数据（仅显示前10条）
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