Data

This is a mindmap for Unit 1 foundation maths...the topic is data

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  • Created by: Tania
  • Created on: 29-05-13 11:14
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  • Data
    • Quantitative
      • Time Taken
      • Mass
      • Heights
      • It has to be a number
      • Easier to analyse
    • Qualitative
      • Colour
      • It has to be words
      • Gender
      • Describe it
      • Harder to analyse
      • How nice/ bad something is
    • Discrete
      • Exactly
      • Countable
      • Individual values
      • Number of people, points, pages
    • Continuous
      • Age
      • Always
      • More accurate
      • Length
      • Any value
    • Sampling
      • Cheaper
      • Cons- No info every member of population
      • Pros- Quicker Cheaper more practical than using the whole population
      • Survey- part of the population
      • Make estimates draw conclusions about whole population
      • Has to be representative- unbiased big enough
    • Survey Questions
      • Fixed number of answers
      • Limited options
      • Easily processed
    • Questionnaires
      • "Other" Category
      • Clear brief
      • Relevent
      • Easy to understand
      • All possible anwsers
      • Biased
    • Secondary
      • Databases
      • Newspapers
      • Processed
      • Historical records
      • Internet
      • Someone else's
      • Can be presented as graph percentage table
    • Primary
      • You've collected
      • Experiment
      • Measure
      • Raw data (Data that hasn't been processed)
      • Questionnaire
      • Survey
    • Splitting data into Classes
      • Grouping it
      • Lots of data only
      • Different classes
      • Define the classes well

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