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Levels of measurement Question 1

Levels of measurement Question 1. Age in years? Ratio and discrete Is the following statement valid? A person who is 44 years old is twice as old as someone who is 22 years old Valid – ratio level measures allow us to identify the magnitude of differences. Levels of measurement Question 2.

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Levels of measurement Question 1

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  1. Levels of measurement Question 1 • Age in years? • Ratio and discrete • Is the following statement valid? • A person who is 44 years old is twice as old as someone who is 22 years old • Valid – ratio level measures allow us to identify the magnitude of differences

  2. Levels of measurement Question 2 • Temperature in Celsius? • Interval and continuous • Is the following statement valid? • Liquid that is 3°C is three times as hot as the same liquid at 1°C • Not valid – interval level measures tell us how much more (2°C in this case) but not magnitude

  3. Levels of measurement Question 3 • Religion? • Nominal • Why? • Nominal level measures have no ordering • What is wrong with these categories for measuring religion? • Catholic • Anglican • Hindu • Buddhist

  4. Levels of measurement Question 4 • Exam grades i.e. A, B, C etc • Ordinal • Is the following statement valid? • A student who got a ‘B’ got a higher grade than a student who got a ‘C’ • Valid – but with ordinal level measures we don’t know by how much higher

  5. Levels of measurement Question 5 You measure the waist (in cm) of a number of patients. This would be an example of measurement at the: • nominal level. • ordinal level. • interval level. • ratio level.

  6. Levels of measurement Question 6 What level of measurement would be involved in recording a person's national insurance number? • nominal level • ordinal level • interval level • ratio level

  7. Levels of measurement Question 7 A variable that can only take certain values (like whole numbers) is referred to as a: • continuous variable. • discrete variable. • constant. • statistical variable.

  8. Levels of measurement Question 8 Identify the usual level of measurement for each of the following A. year in schoolB. IQ scoresC. life expectancyD. fatigueE. cynicismF. hair colourG. type of neighbourhood

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