Stem and Leaf Diagrams (Leaving Cert Mathematics): Flashcards

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Stem and Leaf Diagrams
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14 cards from this deck

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Purpose of stem & leaf diagram

Shows all data values + distribution pattern

Stem represents in stem & leaf

Tens digit (or higher place value)

Leaf represents in stem & leaf

Units digit

Essential element in every stem & leaf diagram

A key showing how to read the notation

42 in stem & leaf notation

4|2 (stem=4, leaf=2)

Order of leaves in stem & leaf diagram

Smallest to largest (numerical order)

Use of back-to-back stem & leaf diagram

Comparing two datasets

Stem for decimal data in stem & leaf

Units digit

Leaf for decimal data in stem & leaf

Decimal part (tenths)

Median position formula (nn values)

n+12\frac{n+1}{2}

Lower quartile (Q1Q_{1}) position formula

n+14\frac{n+1}{4}

Upper quartile (Q3Q_{3}) position formula

3(n+1)4\frac{3(n+1)}{4}

Number of parts quartiles divide data into

Four equal parts

Common error in stem & leaf diagrams

Missing the key

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