BU127 Lecture Notes - Lecture 3: Automotive Battery, Standard Deviation, Parametric Statistics
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BU127 Full Course Notes
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Chapter one stats statistics is a science dealing with the collection, analysis, interpretation, and presentation of numerical data. Population: a collection of people, interests, or objects. It can be defined as a category examples: all automobiles or it can be. Set of objects example: all mustangs produced in 2007 in elliot lake. Collection of people example: all employees who work at microsoft. Census: when researches gather data from the whole population given a measurement of interest. Sample: a sample is a portion of the whole. Its goal is to be a good representative of the whole. There are 75 light bulbs (population) you would take 40 of those light bulbs (sample) and test them. Descriptive statistics: gathering data on a group to describe or reach conclusions about the same group. Ex batting average,- used to describe an individual or team effort. Inferential statistics- gathering data from a sample then using the statistics to reach conclusions about the populations.
