Data (HSC SSCE Mathematics Advanced): Flashcards

📚Flashcards
Organise and Graph Datasets
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Practise the cards

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What frequency measures

How many times a value appears in a dataset

Relative frequency formula

fn\frac{f}{n}

What cumulative frequency is

Running total of frequencies through ordered dataset

What a histogram shows

Visual representation of frequency distribution using bars

Mode on frequency histogram

Value/class with tallest bar (highest frequency)

Median position for nn observations

n2\frac{n}{2}

Cumulative frequency polygon (ogive)

Line graph displaying cumulative frequencies

Finding median from ogive

Locate n2\frac{n}{2} on y-axis, read to curve, down to x-axis

Discrete random variable

Variable taking only specific, countable values

Final cumulative relative frequency

Always equals 1 (or 100%)

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