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Classifications of data

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Classifications of Data

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Classifications of data

  1. 1.  On a scrap piece of paper can you define the 3 key terms from last week?
  2. 2.  To introduce all students to the different classifications of data 1. All students will be able to identify all classifications of data 2. Some students will be able to identify and define all classifications of data 3. Some students may be able to apply their knowledge through giving sporting examples of each data classification
  3. 3.  There are 6 classifications of data: 1. Discrete 2. Nominal 3. Ordinal 4. Continuous 5. Interval 6. Ratio
  4. 4. Discrete data is a form of data where only separate, isolated or opposite values can be achieved (for example, male/female). Ordinal data is where data is ranked in an order, but with no indication of skill difference. Take the golf rankings as an example, players ranked 1, 2 and 3 show who is better. However, it does not state how much better player 1 is from player 2, is he 2 times better? A nominal scale is where participants are put into categories and counted, for example, grouping hockey players under the team they play for. Interval data is based on a scale that has equal intervals of measurement with equal intervals between each score. For example, in a figure skating scoring scale there is the same difference between scoring 5 and 5.5 as there is between scoring 5.5 and 6. Continuous data is data that can have any numerical value with any number of decimal places. For example, lap times in a Moto GP race can be classed as continuous data because of the values they are given (1 minute, 35.37 seconds). Ratio data has proportional equal units of measurement. Ratio scales range from zero upwards and cannot have negative scores. For example, if a rugby team scores 40 points, it is worth twice as much as their opponents who have scored 20 points.
  5. 5.  100 sit ups race  Coin football  Macarena  Office basketball Which classification is each game?  Football teams that you support
  6. 6.  100 sit ups race - Continuous  Coin football - Ratio  Macarena – Interval  Office basketball – Ordinal  Football teams that you support - Nominal

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