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Statistics
Edexcel GCSE Statistics
The collection of data
Collecting data
Extraneous variables and control groups
Edexcel GCSE Statistics · 1ST0
Extraneous variables and control groups
What you need to know
Understand the critical importance of actively identifying and controlling extraneous variables during data collection.
Evaluate the purpose and necessity of establishing control groups to validate experimental findings.
Understand the statistical advantage of utilising matched pairs when structuring control groups.
Revision notes
1
Extraneous variables and control groups
5 key terms
Pro
Practise with past papers
Key terms & definitions
Previous subtopic
Data cleaning techniques
Next section: Processing, representing and analysing data
Pictorial data representation
1d.07 Extraneous variables and control groups — Edexcel Statistics 1ST0 | GradeGen
