eBook
Introduction to Calculus
This is the first of three sections on differential calculus. This is significant branch of mathematics with lots of applications. It builds very nicely on other concepts in the course and those you are...
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Cumulative Frequency and boxplots
Looking at the Spread of Data - This topic is all about these two related tools for helping us look at how a data set is spread out. Learn about filling in cumulative frequency tables, plotting the corresponding...
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Spearman's Rank
Analysing how closely two things are correlated is incredibly useful to ascertain exactly how strongly one variable affects another. Whilst helpful if the data is approximately linear, Pearson's Product...
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Probability
This unit is all about probability - the study of chance. For many students, much of this is revision of previous experiences with some new ideas thrown in. The unit covers the fundamental ideas, language...
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Bivariate data & Linear Correlation
This topic is all about looking for relationships between variables. Does life expectancy depend on GDP? By collecting 2 variables about the things we survey we can use scatter graphs to represent the...
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Binomial Distribution
In this chapter we are going to explore probabilities in events where there are only two possible outcomes. This could be success or failure, truth or lies, accuracy or inaccuracy, etc. These particular...
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Discrete random variables
Random variables are a set of possible outcomes from a random experiment. They can either be discrete or continuous. In this chapter we will find out more about discrete random variables, how they can...
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Central tendency and Dispersion
Mean, Mode, Median, Range, Variance, Standard Deviation Measures of central tendency, such as the mean, median and mode, are very useful ways of representing large amounts of data with just one value....
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Statistical concepts
Statistics are so powerful because they allow us to create meaning from data. In this chapter we will learn the differences between types of data, how to choose useful samples, and how to recognise outliers...
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Chi Squared Independence tests
The chi squared independence tests is a widely used technique for looking for a relationship between variables that are categorical. We can use a scatter graph to look for a relationship between GDP and...