Duplicate records
Duplicate checks use the unit of observation and expected keys to distinguish repeats from valid records.
3 minutes. No sign-up needed.
This lesson is part of the Data Analytics course.
Example plan3 lessons · 10 min
Missing values4 min
Duplicate recordsData quality assessment3 min
Inconsistent categoriesData quality assessment3 min
An example. Your plan follows your answers, so it can start later and end sooner.
Build my plan
Start free, no account needed.