Summarising Data (Grade 10 NSC Matric Mathematical Literacy): Flashcards
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Measures of central tendency
Measures of central tendency
Show the central or typical position of data
Measures of spread
Measures of spread
Describe how data is distributed or dispersed
Mean
Mean
Average; sum of values ÷ number of values
Formula for mean
Formula for mean
Median
Median
Middle value when data arranged in ascending order
Critical step before finding median
Critical step before finding median
Arrange data in ascending order (smallest to largest)
Median with even number of values
Median with even number of values
Average of the two middle values
Mode
Mode
Data value that appears most often in a dataset
Modal class (grouped data)
Modal class (grouped data)
Group/class interval with the highest frequency
Range formula
Range formula
Highest data value - Lowest data value
