Problems with collected data (AQA GCSE Statistics): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
Which statement best describes an outlier in statistics?
Which statement best describes an outlier in statistics?
A value that is significantly higher or lower
Why is data cleaning important?
Why is data cleaning important?
To ensure accurate analysis
What should you do with impossible values?
What should you do with impossible values?
Correct or remove them
What is a potential issue with self-reported data?
What is a potential issue with self-reported data?
It can introduce bias
How should you handle missing data?
How should you handle missing data?
Estimate or collect more data
What is a key step in data cleaning?
What is a key step in data cleaning?
Checking unit consistency
What does a small sample size affect?
What does a small sample size affect?
Generalizability of results
What is a common data quality issue?
What is a common data quality issue?
Outliers
Why check for outliers?
Why check for outliers?
To ensure data accuracy
What is a crucial first step in data analysis?
What is a crucial first step in data analysis?
Examine your data