Edexcel IGCSE Physics: Double Science 复习笔记：6.1.1 Magnetism
Edexcel IGCSE Physics: Double Science 复习笔记：6.1.1 Magnetism The Law of Magnetism Poles of a Magnet The ends of a magnet are called poles Magnets have two poles: a north and a south  ...
Edexcel IGCSE Physics: Double Science 复习笔记：5.2.6 Boyle's Law
Edexcel IGCSE Physics: Double Science 复习笔记：5.2.6 Boyle's Law Boyle's Law For a fixed mass of a gas held at a constant temperature: pV = constant Where: p = pressure in pas...
Edexcel A Level Maths: Statistics:复习笔记3.1.3 Tree Diagrams
Tree Diagrams What is a tree diagram? A tree diagram is used to show the (combined) outcomes of more than one event that happen one after the other help calculate probabilities when AND and/or OR’s...
Edexcel A Level Maths: Statistics:复习笔记3.1.2 Venn Diagrams
Venn Diagrams What is a Venn diagram? A Venn diagram is a way to illustrate events from an experiment and are particularly useful when there is an overlap (or lack of) between possible outcomes A V...
Edexcel A Level Maths: Statistics:复习笔记3.1.1 Calculating Probabilities & Events
Probability Basics What do I need to know about probability for AS and A level Mathematics? The language used in probability can be confusing so here are some definitions of commonly misunderstood ...
Edexcel A Level Maths: Statistics:复习笔记2.5.2 Hypothesis Testing for Correlation
Hypothesis Testing for Correlation You should be familiar with using a hypothesis test to determine bias within probability problems. It is also possible to use a hypothesis test to determine wheth...
Edexcel A Level Maths: Statistics:复习笔记2.5.1 PMCC & Non-linear Regression
Product Moment Correlation Coefficient (PMCC) What is the product moment correlation coefficient? The product moment correlation coefficient (PMCC) is a way of giving a numerical value to linear co...
A-Level化学课程难不难？附真题练习
A-Level化学课程难不难？ 化学是A-Level科目中最难的科目之一，涉及很多复杂的概念以及需要记忆的知识点。 然而化学是很多学科与专业的基础，许多理工科的大学专业，比如生物、化学、医药、食品等都会要求申请者...
Edexcel A Level Maths: Statistics:复习笔记2.4.1 Correlation & Regression
Scatter Diagrams What does bivariate data mean? A lot of statistics is about looking at how different factors, or variables change how data behaves Bivariate data is data which is collected on two ...
