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Type, Sources & Quality of Data (Types (Boolean (Yes/No, True/False),…
Type, Sources & Quality of Data
Sources
Questionnaries
Simple to administer
Face toface Interviews
Collect bigger amount of data
Observation
Data gatherers observ what is happening with people
Data Logging
Use of sensors
Types
Real
Weight: 26.5;52.9
Integer
Year: 2012;2015
Boolean
Yes/No
True/False
String
Country: Argentina;Brasil
Date/Time
12/02/2018 --> February 12th 2018
Quality of Data
Factors affecting quality
Accuracy
Relevance
Age
Completeness
Presentation
Level of detail
Avoid text and lines overlapping.
Very good.