Controlling extraneous variables (AQA GCSE Statistics): Flashcards
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What are extraneous variables in an experiment?
What are extraneous variables in an experiment?
Unwanted factors that can affect results, not studied.
Why control extraneous variables in research?
Why control extraneous variables in research?
To ensure results reflect the true relationship being studied.
Example of an extraneous variable in a memory test?
Example of an extraneous variable in a memory test?
Noise from construction affecting students' concentration.
What methods can reduce noise in experiments?
What methods can reduce noise in experiments?
Control environment and use soundproofing techniques.
What is the explanatory variable in a sleep study?
What is the explanatory variable in a sleep study?
The new medication being tested for sleep improvement.
Identify a response variable in a sleep study.
Identify a response variable in a sleep study.
Sleep quality measured through heart rate patterns.
What methods control temperature in experiments?
What methods control temperature in experiments?
Use thermostats, water baths, or controlled environments.
What is a common control for lighting issues?
What is a common control for lighting issues?
Use proper lighting equipment for visual tasks.
Why standardize conditions in experiments?
Why standardize conditions in experiments?
To ensure all participants experience the same environment.
What can create false patterns in data?
What can create false patterns in data?
Uncontrolled extraneous variables affecting results.