Random sampling (AQA GCSE Statistics): Flashcards
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Practise the cards
10 cards from this deck
What is the key principle of random sampling?
What is the key principle of random sampling?
Equal probability for every member of the population.
What is a sampling frame in statistics?
What is a sampling frame in statistics?
A list of all individuals in the population to sample from.
What is a disadvantage of random sampling?
What is a disadvantage of random sampling?
Requires a complete list of the population members.
How can you select a random sample of 200 from 4000?
How can you select a random sample of 200 from 4000?
Use a random number generator for numbers 1-4000.
What does unbiased selection in sampling mean?
What does unbiased selection in sampling mean?
No personal preferences affect the selection process.
How do you round decimal random numbers for sampling?
How do you round decimal random numbers for sampling?
Multiply by population size and round to whole numbers.
Why is a large sample size important?
Why is a large sample size important?
It increases the accuracy of representing the population.
What is one method to randomly select samples?
What is one method to randomly select samples?
Draw identification numbers from a hat.
What is a random number table used for?
What is a random number table used for?
To select identification numbers without patterns.
What is the main benefit of random sampling?
What is the main benefit of random sampling?
It provides accurate and reliable conclusions.