Displaying and Describing Numerical Data - Further Exploration (VCE SSCE General Mathematics): Quizzes

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Displaying and Describing Numerical Data
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10 questions from this quiz

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What type of data can only take specific, separate values?

Discrete data

What formula calculates percentage in a frequency table?

(frequency ÷\div total) ×\times 100

When should you group data into intervals?

When variable takes many different values

What is a critical principle for choosing intervals?

Intervals must not overlap

How many groups (intervals) should you aim for when grouping data?

Approximately 5 to 15 groups

What is the modal interval?

Interval with highest frequency

What does the vertical axis of a histogram show?

Frequency (count or percentage)

How do histograms differ from bar charts?

Histograms show numerical data, no gaps

How should columns appear in a histogram for continuous data?

Columns touch with no gaps

What must be true about gaps between intervals when grouping data?

There should be no gaps

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