12 FURTHER MATHEMATICS Organising and Displaying Data.

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Presentation transcript:

12 FURTHER MATHEMATICS Organising and Displaying Data

Classifying Data

Types of variables: categorical and numerical

Organising and displaying categorical data: The frequency table

The bar chart

The mode One of the features of a data set that is quickly revealed with a bar chart is the mode or modal category.

What to look for in a frequency distribution of a categorical variable: writing a report

Segmented Bar Charts

Organising and displaying numerical data Frequency tables can also be used to organise numerical data. For discrete numerical data, the process exactly mirrors that for categorical data. For continuous data, some modifications need to be made because groups of data values, rather than individual values are listed.

Organising and displaying numerical data

Grouping Data

The histogram

The histogram – Graphics Calculator

What to look for in a histogram

Stem Plots

Stem Plots – Split Stems

Stem Plots – Back to Back

Dot Plots

Which Graph?

WORK TO BE COMPLETED Exercises All Questions 1A -1 E Chapter S.R.