data cleaning
What data cleaning means in Mathematics A-Level, as defined for AQA, WJEC.
Definitions of data cleaning
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Reference: WJEC
The systematic process of identifying, correcting, or removing anomalies before undertaking statistical analysis.
The documented process of checking and preparing raw data, including treatment of missing values, errors, duplicates and possible outliers.
Topics that use data cleaning
- L: Data presentation and interpretation (AQA A-Level)
- Data presentation and interpretation (AS Unit 2: Applied Mathematics A) (WJEC A-Level)
Related terms
- Frequency density
- interquartile range
- standard deviation
- Summary statistics
- Bivariate data
- bivariate interpretation
- box plot conventions
- causal inference
Using data cleaning in the exam
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