Transformation of a Single Variable What is Var(X)? Var(X) represents the variance of the random variable X Var(X) can be calculated by the formula You will not be required to use this formula in t...
Expected Values E(X) What does E(X) mean and how do I calculate E(X)? E(X) means the expected value or the mean of a random variable X The expected value does not need to be an obtainable value of ...
Discrete Probability Distributions What is a discrete random variable? A random variable is a variable whose value depends on the outcome of a random event The value of the random variable is not ...
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 between possible outcomes A Venn diagram c...
Conditional Probability What is conditional probability? Conditional probability is where the probability of an event happening can vary depending on the outcome of a prior event The event A happen...
Probability Basics What key words and terminology are used with probability? An experiment is a repeatable activity that has a result that can be observed or recorded Trials are what we call the re...
Exponential Relationships How do I use logarithms to linearise exponential relationships? Graphs of exponential functions appear as straight lines on semi-log graphs How can I use linearised data t...
Logarithmic Scales What are logarithmic scales? Logarithmic scales are scales where intervals increase exponentially A normal scale might go 1, 2, 3, 4, ... A logarithmic scale might go 1, 10, 100,...
Non-linear Regression What is non-linear regression? You have already seen that linear regression is when you can use a straight line to fit bivariate data Non-linear regression is when you can use...
