Vocabulary & Terminology Quick-Reference Guide for Year 7 CIE Statistics | Year 7 CIE 统计：词汇术语速记指南

📚 Vocabulary & Terminology Quick-Reference Guide for Year 7 CIE Statistics | Year 7 CIE 统计：词汇术语速记指南

Mastering statistics starts with learning the language. In Year 7 CIE Statistics, you’ll encounter many new words that describe data, charts, averages, and probability. This guide breaks down key terms into logical groups and provides memory tricks to help you recall them quickly. Use it as a reference whenever you’re stuck on a term.

掌握统计学从学习语言开始。在 Year 7 CIE 统计中，你会遇到许多描述数据、图表、平均值和概率的新词汇。本指南把关键术语分成逻辑组，并提供记忆技巧帮助你快速回忆。遇到不懂的术语时，随时用它作为参考。

1. Types of Data: Qualitative vs Quantitative | 数据类型：定性数据与定量数据

Data is any information collected. It is broadly divided into qualitative data and quantitative data. Qualitative data describes qualities or categories, such as eye colour, type of car, or favourite movie. It is non-numerical. Quantitative data describes quantities that can be counted or measured, such as number of siblings, height in centimetres, or time in minutes.

数据是收集到的任何信息。它大致分为定性数据和定量数据。定性数据描述性质或类别，例如眼睛颜色、汽车类型或最爱电影，是非数值的。定量数据描述可计数或测量的数量，例如兄弟姐妹的数量、以厘米为单位的身高或以分钟为单位的时间。

Memory trick: Link ‘Qual’ to ‘Quality’ (describing features) and ‘Quant’ to ‘Quantity’ (involving numbers). Just ask: ‘Does this data answer “what kind?” (qualitative) or “how many/much?” (quantitative)?’

记忆技巧：把 ‘Qual’ 与 ‘Quality（质量/特性）’ 联系起来，把 ‘Quant’ 与 ‘Quantity（数量）’ 联系起来。只需问：’这个数据回答的是哪种？(定性) 还是多少？(定量)？’

2. Discrete vs Continuous Data | 离散数据与连续数据

Quantitative data can be discrete or continuous. Discrete data can only take certain values, usually whole numbers, and is often counted. Examples: number of students in a class, goals scored in a match, shoe size. Continuous data can take any value within a range and is usually measured. Examples: height, weight, temperature, time.

定量数据可以是离散的或连续的。离散数据只能取特定的值，通常是整数，且通常是计数得到的。例子：班级学生人数、比赛进球数、鞋码。连续数据可以在一个范围内取任意值，通常是测量得到的。例子：身高、体重、温度、时间。

Memory trick: ‘Discrete’ sounds like ‘distinct’ – you can count distinct separate items. ‘Continuous’ means continues without gaps, like a continuous line on a graph. Also think: Can you have half of it meaningfully? Half a student (discrete) doesn’t make sense, but half a metre (continuous) does.

记忆技巧：’Discrete（离散）’ 听起来像 ‘distinct（截然不同的）’——你可以数出一个个独立的项目。’Continuous（连续）’ 意味着不间断，就像图上的连续线条。还可以想：这个东西能合理地分成一半吗？半个学生（离散）不合理，但半米（连续）就合理。

3. Primary vs Secondary Data | 一手数据与二手数据

Data can be collected first-hand or obtained from existing sources. Primary data is data you collect yourself for a specific purpose, such as conducting a survey in your class or measuring plant growth. Secondary data is data that someone else has already collected, such as data from a book, website, or government statistics. Primary data is often more reliable for your specific question but takes more time; secondary data is quick to obtain but might not perfectly match your needs.

数据可以亲自收集或从已有资料获取。一手数据（Primary data）是您自己为特定目的收集的数据，例如在班级中进行调查或测量植物生长。二手数据（Secondary data）是他人已经收集好的数据，例如来自书籍、网站或政府统计的数据。一手数据通常对您的具体问题更可靠，但耗时更长；二手数据获取快捷，但可能不完全符合需求。

Memory trick: ‘Primary’ means first, like primary

Published by TutorHao | Year 7 统计 Revision Series | aleveler.com

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