Summarising Data (Grade 11 NSC Matric Mathematical Literacy): Flashcards
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Mean definition
Mean definition
Arithmetic average of all values in a data set
Mean formula
Mean formula
Sum of all values ÷ number of values
Median definition
Median definition
Middle value when data arranged in order
Median with even count
Median with even count
Average of the two middle values
Mode definition
Mode definition
Value that occurs most frequently in a data set
Range formula
Range formula
Highest value - lowest value
Mean's main limitation
Mean's main limitation
Heavily influenced by outliers
Median's key advantage
Median's key advantage
Not affected by outliers
When to use mode
When to use mode
Finding most common/popular item (sales, preferences)
Central tendency meaning
Central tendency meaning
Single value representing centre/average of a data set