Control groups and matched pair tests (AQA GCSE Statistics): Flashcards
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Practise the cards
10 cards from this deck
What is the purpose of a control group in research?
What is the purpose of a control group in research?
To provide a baseline for comparison with the test group.
How do researchers ensure fairness in control groups?
How do researchers ensure fairness in control groups?
By randomly assigning participants to control or test groups.
What is a placebo in a control group?
What is a placebo in a control group?
A fake treatment that looks real but has no active ingredients.
Why is random selection important for control groups?
Why is random selection important for control groups?
It ensures groups are similar, reducing bias in results.
What is a matched pair test?
What is a matched pair test?
A method pairing similar participants for comparison.
How do matched pairs control extraneous variables?
How do matched pairs control extraneous variables?
By pairing individuals with similar characteristics.
What is a key advantage of matched pair tests?
What is a key advantage of matched pair tests?
They require smaller sample sizes for accurate results.
What is a disadvantage of matched pair tests?
What is a disadvantage of matched pair tests?
Finding suitable matched pairs can be time-consuming.
How do control groups help in drug trials?
How do control groups help in drug trials?
They show if improvements are due to the drug or not.
What is a critical point about matched pair tests?
What is a critical point about matched pair tests?
They should only differ in the treatment received.