Year 8 WJEC Statistics: Case Study Practical Exercises | 案例分析实战演练

📚 Year 8 WJEC Statistics: Case Study Practical Exercises | 案例分析实战演练

In Year 8 WJEC Statistics, applying your knowledge to real-world scenarios is essential for developing strong data handling skills. This case study practical exercise will guide you through a complete statistical investigation, from collecting data to interpreting results, using a realistic survey of Year 8 students’ leisure activities and weekly exercise hours. You will practise constructing frequency tables, drawing charts, calculating averages and range, and even estimating probability. Work through each section carefully, and you’ll gain confidence in tackling your own statistical projects.

在八年级 WJEC 统计课程中，将所学知识应用于真实场景是培养扎实数据处理能力的关键。本案例分析实战演练将通过一项关于八年级学生休闲活动和每周运动时间的实际调查，引导你完成一次完整的统计调查，从数据收集到结果解读。你将练习绘制频数表、制作图表、计算平均值与极差，乃至估计概率。仔细完成每个部分，你将能自信地应对自己的统计项目。

1. Case Introduction and Objective Setting | 案例介绍与目标设定

Imagine you have been asked to investigate the leisure habits of Year 8 students at your school. You designed a two-question survey: Question 1: ‘What is your favourite leisure activity?’ with options Gaming, Sports, Reading, Music, Other. Question 2: ‘How many hours per week do you spend on sports or physical activity?’ (numerical answer). The responses from 30 randomly selected students are recorded below. Your task is to analyse this data and present clear findings.

假设你接到任务，调查你所在学校八年级学生的休闲习惯。你设计了一份包含两个问题的问卷：问题1：“你最喜欢的休闲活动是什么？”（选项：游戏、运动、阅读、听音乐、其他）。问题2：“你每周用于运动或体育活动的时间是多少小时？”（数值答案）。从随机挑选的30名学生中收集到的回答如下。你的任务是分析这些数据并呈现清晰的结论。

The raw data for favourite activity: Gaming, Sports, Music, Reading, Gaming, Sports, Gaming, Music, Sports, Gaming, Reading, Music, Gaming, Sports, Gaming, Other, Music, Sports, Reading, Gaming, Sports, Gaming, Music, Gaming, Sports, Reading, Music, Gaming, Sports, Other.

原始数据（最喜欢的活动）：游戏、运动、音乐、阅读、游戏、运动、游戏、音乐、运动、游戏、阅读、音乐、游戏、运动、游戏、其他、音乐、运动、阅读、游戏、运动、游戏、音乐、游戏、运动、阅读、音乐、游戏、运动、其他。

The raw data for weekly exercise hours: 2, 5, 3, 1, 0, 4, 6, 2, 3, 5, 1, 7, 2, 4, 0, 8, 3, 2, 1, 5, 6, 3, 4, 2, 0, 5, 1, 4, 7, 3.

原始数据（每周运动小时数）：2, 5, 3, 1, 0, 4, 6, 2, 3, 5, 1, 7, 2, 4, 0, 8, 3, 2, 1, 5, 6, 3, 4, 2, 0, 5, 1, 4, 7, 3。

2. Data Collection Methods | 数据收集方法

This case study uses a primary data collection method – a questionnaire distributed to 30 randomly chosen Year 8 students. Random sampling helps ensure the sample is representative of the whole year group, reducing bias. The questions were designed to be clear and easy to answer: Question 1 is categorical (

Published by TutorHao | Year 8 统计 Revision Series | aleveler.com

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