Linear Simultaneous Equations - Substitution What are simultaneous linear equations? When you have more than one equation in more than one unknown, then you are dealing with?simultaneous equ...
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,...
