Representations for Determining Possible Outcomes (Grade 11 NSC Matric Mathematical Literacy): Flashcards

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Representations for Determining Possible Outcomes
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Tree diagram definition

Visual representation of all possible sequential event outcomes

Why called 'tree diagram'

Looks like branching tree with paths for different outcomes

Branches in tree diagrams represent

Different outcomes or possible results of an event

Values shown on tree diagram branches

Probability values for each specific outcome

Direction to construct tree diagrams

Left to right: first event left, then branches to right

Sum of probabilities at same tree level

Add up to 1 (or 100%)

Two-way table definition

Data table comparing two different variables

Rows & columns in two-way tables

Rows = one variable, columns = another variable

Formula: convert values to probability %

Individual valueTotal value×100%\frac{\text{Individual value}}{\text{Total value}} \times 100\%

Effect of different totals in two-way tables

Changes the meaning of probability calculations

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