Cleaning data
What Cleaning data means in Mathematics A-Level, as defined for AQA, Pearson Edexcel.
Definitions of Cleaning data
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Reference: AQA
Checking for missing entries, impossible values such as negative heights, and outliers, then deciding whether to remove, correct or keep them, and recording your decision.
Checking for missing values, impossible or misrecorded entries and outliers, then deciding whether to correct, exclude or retain each one.
Topics that use Cleaning data
- L: Data presentation and interpretation (AQA A-Level)
- Data presentation and interpretation (Pearson Edexcel A-Level)
Related terms
- Correlation
- Frequency density
- Histogram
- Measures of central tendency
- Measures of variation
- Outlier
- standard deviation
- Summary statistics
Using Cleaning data in the exam
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