Measures of Central Tendency (Grade 12 NSC Matric Mathematical Literacy): Flashcards
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Measure of central tendency
Measure of central tendency
Single number representing typical/central value of data set
Three main measures of central tendency
Three main measures of central tendency
Mean, Median, Mode
Mean formula
Mean formula
Mean's relationship to outliers
Mean's relationship to outliers
Can be easily influenced by outliers (extreme values)
Median definition
Median definition
Middle value when data arranged in ascending order
Finding median with even number of values
Finding median with even number of values
Add two middle values and divide by 2
Median's relationship to outliers
Median's relationship to outliers
Not affected by extreme values (outliers)
Mode definition
Mode definition
Value that appears most frequently in data set
When to use mean
When to use mean
Data is evenly distributed
When to use median
When to use median
Data contains outliers or is skewed