Nominal: Unordered categorical variables. May 09 2012 05:50 PM. The ordinal level of measurement is a more sophisticated scale than the nominal level. Ordinal: Ordered categories. A _____ is a characteristic that we observed and … Dates themselves are interval, but I could see cases where they could be any of those four. [Ratio] Age is at the ratio level of measurement because it has an absolute zero value and the difference between values is meaningful. Piyanka D answered on January 27, 2015. blood type is nominal while birth rate could be ordinal there may interval between births but they are not on a certain scale some times could be two years and other times 5 years interval. Knowing the scale of measurement for a variable is an important aspect in choosing the right statistical analysis. To put it in other words, ways of labeling data are known as “scales”. Ordinal numbers denote an item's position or rank in a sequence: First, second, third, and so on. The key thing here is that there is no logical order to the categories. The Four levels of measurement scales for measuring variables with their definitions, examples and questions: Nominal, Ordinal, Interval, Ratio. Are dates nominal, ordinal, interval or ratio? Ages of students in a statistics class. Nominal and ordinal are two different levels of data measurement. Nominal; Ordinal; Interval; Ratio; 24. Is a persons year of birth an example of nominal, ordinal, interval, or ratio level of measurement? These are still widely used today as a way to describe the characteristics of a variable. Thereof, is age nominal or ordinal? These can be either binary (only two categories, like gender: male or female) or multinomial (more than two categories, like marital status: married, divorced, never married, widowed, separated). An ordinal-scale variable has values that can be ranked but are not necessarily evenly spaced, such as stage of cancer (see Table 2.3). For example, a person who is 20 years old has lived (since birth) half as long as a person who is 40 years old. Nominal, ordinal, interval and ratio (NOIR) are four levels of measurement typically recognized in the statistical literature. zero on the Celsius scale is just the freezing point; it doesn’t mean that water ceases to exist). Blood lactate concentration (mmol.l-1) Profile of Mood States (scale 1-7) Heart Rate (beats.min-1) Blood Group Bench Press 1RM (kg) Year of Birth (AD) Atmospheric Pressure (mmHg) On the other hand, temperature (with the exception of Kelvin) is not a ratio scale, because zero exists (i.e. 1 Approved Answer. Ramesh Dhakal says: April 26, 2013 at 3:14 am Ordinal scale has all its variables in a specific order, beyond just naming them. Nominal scale is a naming scale, where variables are simply "named" or labeled, with no specific order. Nominal; Ordinal; Interval; Ratio; 23. This scale enables us to order the items of interest using ordinal numbers. Year of birth is interval level of measurement; age is ratio. In the 1940s, Stanley Smith Stevens introduced four scales of measurement: nominal, ordinal, interval, and ratio. There is no order associated with values on nominal variables. An interval-scale variable is measured on a scale of equally spaced units, but without a true zero point, such as date of birth. Ratio: exactly the same as the interval scale except that the zero on the scale means: does not exist.For example, a weight of zero doesn’t exist; an age of zero doesn’t exist. Understanding the level of measurement of your variables is a vital ability when you work in the field of data. 4 Ratings, (9 Votes) The year of birth of persons is an example of interval level of measurement. Nominal, Ordinal, Interval or Ratio? Water ceases to exist ) ramesh Dhakal says: April 26, 2013 at 3:14 am nominal, ordinal interval! Is just the freezing point ; it doesn ’ t mean that water ceases to exist ) scale... 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