Collecting Data (Leaving Cert Mathematics): Flashcards
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Practise the cards
15 cards from this deck
Primary data definition
Primary data definition
Info collected by you for your own specific use
Secondary data definition
Secondary data definition
Info already available/collected by someone else for different purpose
Key difference: primary vs secondary data
Key difference: primary vs secondary data
Who collected it and for what purpose
Primary data advantages
Primary data advantages
Collect exactly what's needed; know how & from whom collected
Primary data disadvantages
Primary data disadvantages
Expensive and time consuming
Secondary data advantages
Secondary data advantages
Cheap and easy to obtain
Secondary data disadvantages
Secondary data disadvantages
Method unknown; may be out of date; may not be exact
Primary data collection methods (4)
Primary data collection methods (4)
Questionnaires, experiments, investigations, observations
Secondary data sources (3 types)
Secondary data sources (3 types)
Internet, published stats/databases, tables/charts in media
Main survey methods (4 types)
Main survey methods (4 types)
Postal, personal interviews, telephone, observation
Postal survey advantages
Postal survey advantages
Relatively cheap; large amounts of data can be collected
Personal interview/telephone advantages
Personal interview/telephone advantages
Many questions can be asked; high response rate
Surveys useful for collecting
Surveys useful for collecting
Personal information from people
Experiments useful for collecting
Experiments useful for collecting
Scientific data
Data capture sheet purpose
Data capture sheet purpose
To record experimental results systematically