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Type , source & Quality of Data (Type (Number (Currency, Real or…
Type , source & Quality of Data
Type
Date/Time
Number
Currency
Real or floating
Integers
Text
Image
Boolean
Source
the original source of data is where you get the data from
where to get it
Face to face interviews
Observation
Questionnaires
Data Logging
Advanteges
the exact amount you want
Get de data you want
You know exactly where the data came from
disadvanteges
Data gathering may be expensive as you hire other companies to get it for you
It may involve having to purchase equipment such as data loggers and computers
Data gathering may take a long time to collect
quality
factors that affecting quality
relevance
age
accuracy
Human mistakes
Calibration of instrument
Questionnaries and survey
presentation
Completeness
level of detail