STAT 2507 Chapter Notes - Chapter 1: Line Chart, Point Estimation, Box Plot
17 Jan 2015
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Document Summary
Statistics is a branch of mathematics that has applications in almost every facet of our daily life. Standard deviation: inferential statistics: procedures used to make inferences about population charac- teristics from information contained in a sample drown from this population contain. Qualitative variables measure a quality or characteristic on each experimental unit. Quantitative variables measure a numerical quantity or amount on each exper- imental unit. Discrete variable is almost always result from counting and its possible values are 0,1,2, or some subset of these digits. Try to develop the techniques for collecting the data. Simplest method is simple random sampling, in this method any particular subset of the speci ed size (e. g. , n = 100) has the same chance of being selected. (cid:70) visual techniques (cid:7) stem and leaf. Steps for constructing a stem and leaf plot. Select one or more leading digits for the stem values. List possible stem values in a vertical column.
