Set Notation What is set notation? Set?notation?is a formal way of writing groups of numbers (or other mathematical entities such as shapes) that share a common feature – each number in a set is ca...
Combinations What is the difference between permutations and combinations? A?combination?is the number of possible arrangements of a set of objects when the?order?of the arrangements?does not matte...
Permutations Are permutations and arrangements the same thing? Mathematically speaking yes, a?permutation?is the number of possible arrangements of a set of objects when the?order?of the arrangemen...
Arrangements How many ways can?n?different objects be arranged? When considering how many ways you can arrange a number of?different?objects in a row it’s a good idea to think of how many of the ob...
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...
Venn Diagrams What is a Venn diagram? A?Venn?diagram is a way to illustrate?events?and are particularly useful when?outcomes?overlap Venn diagrams are mostly used for 2 or 3 events A Venn diagram c...
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 ...
Skewness The distribution of a data set is either symmetrical or it has skewness. What is skewness? Skewness describes the way in which data in a non – symmetrical distribution is leaning A distrib...
Interpreting Data You may be asked to comment on how statistics could affect data or how removing or adding a new piece of data could change statistics you have calculated. You may also be asked to...
