Frequency Tables (AQA A-Level Mathematics): Flashcards
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Practise the cards
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What is the purpose of frequency tables?
What is the purpose of frequency tables?
Organise & summarise data; show how often values appear
What does the frequency column show?
What does the frequency column show?
No. of times each value or interval occurs in dataset
What is cumulative frequency?
What is cumulative frequency?
Running total of frequencies up to each value/interval
What is relative frequency?
What is relative frequency?
Proportion of total frequency, expressed as a percentage
What are class intervals for continuous data?
What are class intervals for continuous data?
Equal ranges that group continuous data values
How to identify mode in frequency table?
How to identify mode in frequency table?
Value or interval with highest frequency
Finding median from discrete frequency table
Finding median from discrete frequency table
Middle value(s) in cumulative frequency column
How to calculate relative frequency?
How to calculate relative frequency?
Divide frequency by total, multiply by for %
Main advantage of frequency tables
Main advantage of frequency tables
Clear summary of large datasets, easier to see patterns
Typical frequency table columns
Typical frequency table columns
Data values/intervals, frequency, cum. freq, rel. freq