MGEB11H3 Lecture Notes - Lecture 1: Pie Chart
6 Mar 2020
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Example 1 there are 150 students in a course we want to find out whoworked lastsummon forstudentswhoworked last summer what is the average hourly pay a the percent of students. Example2 there are lots of students in canada we want to find out a i of students who worked last summer the average hourly pay for the students whoworked. F averagehourlypay sample statistics select a sample only when n is too large. In general weonly work with sample as population is almost always too bigllarge probability population l statistics. Statistics means looking at the sampleresults andreach a population conclusion for the we haveto deal withprobability to deal with the uncertainty part of statistics statistics descriptivestatistics we are describing thepopulation or sample. Inferential statistics we want todraw conclusions on a population based on informer from a sample. Nowadays peoplemakedecisions or conclusions based on sample results. Example ages income incomen c r r c r l l l l l.
