Introduction-to-Statistics-and-Quantitative-Research-Methods

Levels of Data• Nominal= categorical• E.g. Apples and pears, gender, eye colour, ethnicity.• Data that is classified into categories and cannot be arranged inany particular order.– Nominal=Categorical=Dichotomous• Ordinal= data ordered, but distance between intervals notalways equal. E.g. Low, middle and high income, or rating abrand of soft drink on a scale of 1-5.• Interval= equal distance between each interval. E.g. 1,2,3.Arbitrary zero point (ex. Fahrenheit scale for temperature -temperature does not cease to exist at 0 degrees.• Ratio= similar to interval scale, but has true zero point E.g.Weight, salary ($0=$0).