Populations (AQA GCSE Statistics): Flashcards
📚Flashcards
Practise the cards
10 cards from this deck
ShowHide
Practise the cards
10 cards from this deck
Define population in statistics with an example.
Define population in statistics with an example.
Population is the entire group studied, e.g., all students.
What is a census in data collection?
What is a census in data collection?
A census collects data from every member of the population.
List one advantage of conducting a census.
List one advantage of conducting a census.
Complete accuracy since all members are included.
What is a sampling unit?
What is a sampling unit?
An individual item or person from whom data is collected.
What is a representative sample?
What is a representative sample?
A sample that reflects the population's characteristics.
Why is a larger sample size better?
Why is a larger sample size better?
It reduces the impact of unusual responses, increasing reliability.
Identify a bias in sampling methods.
Identify a bias in sampling methods.
Surveying only morning gym users favors that group.
What is a pilot survey?
What is a pilot survey?
A small trial run to identify problems before the main study.
Why is it important to avoid bias?
Why is it important to avoid bias?
Bias can lead to misleading results in statistical studies.
What should you check in a sampling frame?
What should you check in a sampling frame?
Ensure it is complete and up-to-date to avoid errors.