Controlled experiments (AQA GCSE Statistics): Flashcards
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Practise the cards
10 cards from this deck
What is the explanatory variable in an experiment?
What is the explanatory variable in an experiment?
It's the factor that is deliberately changed by the researcher.
Define the response variable in an experiment.
Define the response variable in an experiment.
It's what the researcher measures to see if it changes.
What are extraneous variables in experiments?
What are extraneous variables in experiments?
Factors that could influence results but aren't the focus.
Why is repetition important in experiments?
Why is repetition important in experiments?
It ensures results are valid and reliable over time.
What is a controlled experiment?
What is a controlled experiment?
An experiment where conditions are managed to isolate variables.
Example of an explanatory variable in plant study?
Example of an explanatory variable in plant study?
Length of time plants are exposed to sunlight.
What is a disadvantage of controlled experiments?
What is a disadvantage of controlled experiments?
Results may not reflect real-world conditions accurately.
How can extraneous variables affect results?
How can extraneous variables affect results?
They can introduce bias and make results less reliable.
What is the response variable in Sylvie's study?
What is the response variable in Sylvie's study?
The degree of difficulty patients have sleeping.
What advantage does a controlled environment provide?
What advantage does a controlled environment provide?
It allows precise control over dosage and timing of treatments.