STATS 2B03 Lecture Notes - Statistical Inference
23 Nov 2012
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1. 2-1. 4 (target) population: consists of all subjects that are being studied sample: a group of subjects from the population: descriptive statistics. Consists of summarizing and presenting data: inferential statistics. Consists of using a sample to make a conclusion about a population, using probability (ch3-5). sampled population is the population from which the sample is drawn (sample pop is subset of main pop) *e. g. if i am interested in the average age of a mac student, then the population is all mac students. If i take 30 people from this class then the sampled population is everyone in this class (not only the 30). In order to use inferential statistics, the sample population should be the same as the target population. Quantitative variables are variables that can be measure, e. g. height, weight, age.
