Edexcel IGCSE Maths 复习笔记 6.5.1 Probability - Venn Diagrams What is a venn diagram? Venn diagrams allow us to show two (or more) characteristics of a situation where there is overlap between the...
Edexcel IGCSE Maths 复习笔记 6.4.1 Basic Probability What do we mean by basic probability? There are both simple concepts and very hard topics in probability Probability is used in many areas and i...
Edexcel IGCSE Maths 复习笔记 6.3.1 Cumulative Frequency What does cumulative frequency mean? Cumulative basically means “adding up as you go along” So cumulative frequency means all of the frequenc...
Edexcel IGCSE Maths 复习笔记 6.2.1 Histograms Aren’t histograms just really hard bar charts? No! There are many mathematical differences that you should be aware of but the key difference between a...
Edexcel IGCSE Maths 复习笔记 6.1.5 IQR & Range What are IQR and the range? The three averages (mean, median and mode) measure what is called central tendency – they all give an indication of wh...
Edexcel IGCSE Maths 复习笔记 6.1.4 Calculations with the Mean Solving problems involving the mean Because the mean has a formula it means you could be asked questions that use this formula backward...
Edexcel IGCSE Maths 复习笔记 6.1.3 Averages from Grouped Data What is grouped data and why use it? Some data for a particular scenario can vary a lot For example, the heights of people, particularl...
Edexcel IGCSE Maths 复习笔记 6.1.2 Averages from Tables & Charts How do we find averages if there are lots of values? In reality there will be far more data to work with than just a few numbers...
Edexcel IGCSE Maths 复习笔记 6.1.1 Mean, Median & Mode Why do we have different types of average? You’ll hear the phrase “on average” used a lot, from politicians talking about the economy to s...
