Ungrouped Data How are frequency tables used for ungrouped data? Frequency tables can be used for ungrouped data when you have lots of the same values within a data set They can be used to collect ...
Mean, Mode, Median What are the mean, mode and median? Mean, median and mode are?measures of central tendency They describe where the centre of the data is They are all types of?averages In statist...
Methods of Data Collection How do I choose variables to investigate? Keep the?number of variables?you investigate to a?minimum Too many variables at once can be?overwhelming It can be?time-consumin...
Types of Data What are the different types of data? ?Qualitative?data is data that is usually given in words not numbers to?describe?something For example: the colour of a teacher's car Quantitativ...
This revision note discusses more complex situations for the?travelling salesman problem?and you may wish to refer to the revision note?3.10.5 Travelling Salesman Problem. Table of Least Distances ...
Hamiltonian Paths & Cycles What are Hamiltonian paths and cycles? A?path?is a walk in which?no vertices are repeated A?Hamiltonian path?is a path in which each?vertex?in a graph is visited?exac...
Eulerian Trails & Circuits What are Eulerian trails and circuits? A?trail?is a walk in which?no edge is repeated An?Eulerian trail?is a trail that visits each?edge?in a graph?exactly once A?cir...
Kruskal's Algorithm In a situation that can be modelled by a graph,?Kruskal’s algorithm?is a mathematical tool that can be used to?reduce?costs, materials or time. Why do we use Kruskal’s Algorithm...
Walks & Adjacency Matrices Adjacency matrices?are another way to represent graphs and connections between the different vertices. What is an adjacency matrix? An adjacency matrix can be used to...
