Edexcel GCSE Statistics · 1ST0
Specification 1a.03, 1d.06, 2c.02, 2c.03 · Paper 1, Paper 2
Revise: Mitigating enquiry issuesAn outlier is a value unusually large or small compared with the others. An age recorded as 500 is likely to be a recording error; check the original record and correct it if possible. In contrast, a very high salary may genuinely belong to a company's chief executive.
- Revise: Data cleaning techniques
A data value that is unusually large or small compared with the rest of the data. Also called an anomalous value; it may be genuine or an error.