STAT-1401 Lecture Notes - Lecture 1: Statistical Inference, Descriptive Statistics, Bar Chart
26 Apr 2020
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Document Summary
Statistics is a science of collecting, summarizing, analyzing, interpreting information (data) and drawing conclusions. Note : example of test question - is population a statistic? etc. Descriptive is the science of describing the important aspects of a set of measurements. It consists of methods for organizing and summarizing information. Inferential is if the population is small enough, then we could take a census and not have to sample and make any statistical inferences. Census is a complete count of a population. Descriptive statistics includes the construction of graphs, charts, and tables and the calculation of various descriptive measures such as averages, measures of variation, and percentiles. Ie. describes data (for eg, a chart of the graph) Helps to summarize and analyze data but does not help to conclude data. I. e. allows you to make predictions ( inferences ) from that data. Inferential statistics is only needed if you don"t know the truth.
