MATH 1131 Chapter 2: Chapter 2- Statistics 1131.docx
22 Sep 2013
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Univariate: a data set consisting of observation of only a single characteristic of the individuals/ objects. Bivariate: a data set consisting of observations of two characteristics of the individuals/objects. Multivariate: data set consisting of observations of more than two characteristics of the individuals/objects. A categorical/qualitative data set: consists of non-numerical observations that may be placed in categories. A numerical/quantitative data set: consist of observations that are numbers. A sample of 12 people is asked what their favorite brand of sneakers is. This is a qualitative data set, since the responses are either nike, adidas etc. Suppose a new enzyme is tested and 20 eggs are randomly selected and weighted, to test the nutritional benefits of the enzyme. Then the resulting weights are recorded in a table. Since the observations are numerical then this is a univariate quantitative data set. Discrete data: is data that values are finite.
