DATABASE FUNDAMENTALS
TYPES OF DATA
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Nominal
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Ordinal
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Discrete
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Continous
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Detailed explanation-1: -The mode is used almost exclusively with nominal-level data, as it is the only measure of central tendency available for such variables. The median is used with ordinal-level data or when an interval/ratio-level variable is skewed (think of the Bill Gates example).
Detailed explanation-2: -The ordinal level of measurement groups variables into categories, just like the nominal scale, but also conveys the order of the variables. For example, rating how much pain you’re in on a scale of 1-5, or categorizing your income as high, medium, or low.
Detailed explanation-3: -Examples of ordinal variables include: socio economic status (“low income”, ”middle income”, ”high income”), education level (“high school”, ”BS”, ”MS”, ”PhD”), income level (“less than 50K”, “50K-100K”, “over 100K”), satisfaction rating (“extremely dislike”, “dislike”, “neutral”, “like”, “extremely like”).