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10 cards from this deck
It's height adjusted for unequal class widths.
Subtract lower boundary from upper boundary.
Frequency density = frequency ÷ class width.
Frequency density = 10 ÷ 5 = 2.
To accurately represent frequency with unequal widths.
The actual frequency of the data points.
Forgetting to subtract boundaries correctly.
Label it 'Frequency density'.
Frequency density = 30 ÷ 10 = 3.
It can distort the visual representation of data.
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