E3 Using and manipulating data
The uses, processes and implications for individuals and organisations of accessing and using data
and information in digital form.
• Sources of data:
o primary
o secondary.
• Judging and ensuring the reliability of data.
• The characteristics and implications of methods of collecting data and opinions:
o survey
o questionnaire
o focus groups
o interview.
• Reasons for ensuring data accuracy.
• Methods of ensuring data accuracy:
o verification
o validation.
• Methods of extracting and sorting data.
• Numerical and data modelling.
• Presenting data and results.
• The characteristics and implications of user interfaces for data collection and processing systems:
o ease of use
o accessibility
o error reduction
o intuitiveness
o functionality
o performance
o compatibility.
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