Classifying and Displaying Categorical Data (VCE SSCE General Mathematics): Flashcards

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Classifying and Displaying Categorical Data
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Variable definition

A characteristic that can change or vary from person to person

Two main types of data

Categorical and numerical

Nominal data

Categorical data using names/labels with no natural ordering

Ordinal data

Categorical data that names categories AND can be ordered/ranked

Discrete data

Numerical data with specific separate values from counting

Continuous data

Numerical data that can take any value within a range

Frequency table purpose

Lists variable values and how often each occurs in the data set

Percentage frequency formula

counttotal×100\frac{\text{count}}{\text{total}} \times 100

Bar chart key feature

Visual display for categorical data with gaps between bars

Mode or modal category

The category that occurs most frequently in the data

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