📚 Year 7 AQA Statistics: Christmas Holiday Booster Revision Plan | Year 7 AQA 统计：寒假强化复习计划
The Christmas break is the perfect opportunity to strengthen your understanding of Year 7 AQA Statistics. This booster plan breaks down key topics into manageable weekly chunks, with clear daily activities, so you can return to school feeling confident and prepared. By dedicating around 30 minutes each day, you will master data types, graphs, averages, probability and more.
圣诞假期是巩固 Year 7 AQA 统计知识的绝佳时机。这份强化复习计划将核心主题拆解为容易掌握的每周任务，并配有清晰的每日活动，帮助你在新学期信心满满地重返校园。每天坚持 30 分钟左右，你就能精通数据类型、图表、平均数、概率等关键内容。
1. Your 3-Week Holiday Revision Roadmap | 你的三周假期复习路线图
This plan is designed to be flexible over roughly three weeks, which can be adjusted if your holiday is shorter. Aim for one main topic focus each day and mix in 5‑a‑day quick questions to keep earlier material fresh. Write down your answers in a dedicated revision notebook so you can track progress and spot any areas that need extra work. The sample table below shows how you can structure a typical week.
本计划为大约三周设计，如果你的假期较短也可灵活调整。每天聚焦一个核心主题，并搭配每日五道快速练习题，以保持对前期内容的记忆。用一个专门的复习笔记本写下答案，这样你可以追踪进度，并发现需要额外加强的薄弱环节。下面的示例表格展示了一周的典型结构。
| Day | Main Topic | Activity |
|---|---|---|
| Monday | Data Types | Sort 15 items into qualitative or quantitative; identify discrete/continuous |
| Tuesday | Tally & Frequency Tables | Collect data from family members and create a frequency table |
| Wednesday | Bar Charts & Line Graphs | Draw two bar charts from given data tables and one line graph |
| Thursday | Pie Charts & Pictograms | Calculate angles for a pie chart; draw a pictogram with a key |
| Friday | Averages & Range | Find mean, median, mode and range for three different sets of data |
| Saturday | Probability Language | Place events on a probability scale and describe using words |
| Sunday | Mini Quiz & Reflect | Complete a 10‑question mixed test and mark your work |
Feel free to swap days around to suit your schedule, but try to complete all the activities listed across each week. The key is consistency, not speed.
你可以根据自己的时间安排调整日期，但要尽量完成每周列出的所有活动。关键在于坚持，而不是一味追求速度。
2. Week 1 Foundation: Types of Data and Collection Methods | 第一周基础：数据类型与收集方法
Start by revisiting the difference between primary and secondary data. Primary data is information you collect yourself through surveys or experiments, such as measuring your friends' hand spans. Secondary data comes from sources like newspapers, websites or textbooks, for example using weather records from the Met Office. AQA questions often ask you to identify the data source and discuss advantages.
首先，回顾一手数据与二手数据的区别。一手数据是你自己通过调查或实验收集的信息，比如测量朋友的手掌宽度。二手数据来自报纸、网站或教科书等来源，例如使用气象局的天气记录。AQA 的题目常要求你识别数据来源并讨论其优缺点。
Next, classify data as qualitative or quantitative. Qualitative data describes qualities and cannot be measured with numbers alone, like eye colour or favourite film genre. Quantitative data is numerical and can be further divided into discrete data, which can only take certain values (such as the number of pets, which is always a whole number), and continuous data, which can take any value within a range (like height measured to the nearest centimetre or millimetre). Write down your own examples of each type until you can sort them instantly.
接下来，将数据分为定性数据与定量数据。定性数据描述事物的性质，不能仅用数字衡量，例如眼睛颜色或最爱的电影类型。定量数据是数字形的，并可进一步分为离散数据与连续数据：离散数据只能取特定值（如宠物数量一定是整数），连续数据则可以在一个范围内取任意值（如身高可精确到厘米或毫米）。写下你自己对每种类型的例子，直到能立刻正确分类为止。
3. Week 1 Continued: Tally Charts, Frequency Tables and Data Organisation | 第一周延续：计数表、频数表与数据整理
Once you have collected raw data, you need to organise it clearly. Tally charts use groups of five to quickly count items, making it easy to spot totals. From a tally chart, you can build a frequency table, which shows each category or group alongside its frequency. Always check that the sum of the frequencies matches the total number of data values – this is a simple but vital check in exams.
收集到原始数据后，你需要将数据清晰地组织起来。计数表用五个一组的方式快速统计，便于发现总数。从计数表出发，你可以制作频数表，在表中列出每个类别或组别及其频数。务必检查频数之和是否等于数据总数——这在考试中虽简单却至关重要。
Practice by surveying your family: ask everyone how many hours of sleep they get on a typical night, record the figures, sort them into a grouped frequency table (e.g. 6−7 hours, 7−8 hours, 8−9 hours) and then draw a neat bar chart to represent the frequencies. Understanding grouped data now will make later topics on averages much easier.
你可以通过家庭调查来练习：询问每位家庭成员平时的睡眠时长，记录数据，把它们整理成分组频数表（如 6−7 小时，7−8 小时，8−9 小时），然后画一张整洁的条形图来表示频数。现在理解分组数据，能让以后学习平均数时轻松许多。
4. Week 2 Core: Bar Charts, Line Graphs and Frequency Diagrams | 第二周核心：条形图、折线图与频数图
A well‑drawn bar chart is one of the most common ways to display discrete or categorical data. Bars must be of equal width, with equal gaps between them. The vertical axis should start at zero and have a clear, evenly spaced scale. Always label both axes and give the chart a title. For example, when representing the favourite pets of Year 7, each bar would be a different pet, and the height would show the frequency.
一张绘制精良的条形图是展示离散或分类数据最常用的方式之一。条形宽度必须一致，条与条之间的间距相等。纵轴应从零开始，标度清晰均匀。务必为两轴添加标签，并为图表添加标题。例如，表示 Year 7 学生最喜爱的宠物时，每一条代表一种宠物，高度表示频数。
Line graphs, on the other hand, are used to show changes over time, such as daily maximum temperatures over a week. Plot each point accurately and join them with straight line segments. When you are asked to read information from a line graph, use a ruler to trace across to the axis – this avoids careless mistakes. Frequency diagrams work like bar charts but are used for continuous data grouped into intervals; they have no gaps between bars because the data is connected along a scale.
而折线图则用来显示随时间变化的趋势，例如一周内每日的最高气温。准确地描出每一点，然后用直线段连接。当题目要求你从折线图中读取信息时，用尺子比划到坐标轴——这能避免粗心造成的错误。频数图类似于条形图，但用于按区间分组后的连续数据；由于数据在尺度上是连续的，条与条之间不留空隙。
5. Week 2 Extended: Pie Charts and Pictograms | 第二周拓展：饼图与象形图
Pie charts show proportions of a whole. You need to know that the total angle in a circle is 360°, and each category’s angle is found using the formula:
饼图展示的是整体中的各部分比例。你需要知道整个圆的圆周角为 360°，每一类别的角度可用以下公式求得：
Angle = (Category frequency ÷ Total frequency) × 360°
Always use a protractor to measure angles accurately. A common exam mistake is to forget that the angles must add up to 360°, so check your totals before moving on. Labelling each sector with the category name and percentage or frequency is essential for full marks.
绘图时总是用角度器精确测量角度。考试中常见的错误是忘记所有角度之和必须等于 360°，因此在完成前记得检查总和。每个扇形都要标注类别名称以及百分比或频数，才能拿到满分。
eople. If you need to show an odd number, you can draw a half symbol. When interpreting pictograms, always refer back to the key – ta collected during your family survey; it is a quick, visual way to communicate findings.
象形图用图画或符号来表示数据。选择一个合适的图例，例如一个笑脸代表 2 人。如果需要表示奇数，可以画出半个符号。在读象形图时，务必参考图例——不要默认一个符号代表一个单位。不妨为你家庭调查收集的数据绘制一张象形图，这是一种快速且直观的呈现方式。
6. Week 3 Averages: Mean, Median and Mode | 第三周平均数：均值、中位数与众数
Averages summarise a data set with a single typical value. The mode is the value that appears most often – it is the only average that can be used for non‑numerical data, such as the most common eye colour. To find the median, first write the numbers in order of size; if
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