STAT 200 Lecture Notes - Lecture 1: Monty Hall Problem, Contingency Table, Pie Chart
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Stat 200 lecture #1 introduction to statistics. Statistics: the study of data collection, analysis, & presentation. Population of interest (poi): all units that we"re interested in studying. Sample: a group of individuals in the population of interest. If the sample represents biased members of the population of interest, it will not accurately represent the poi. If you switch your choice to the door that the host hasn"t opened, you reverse the chances from the previous step, ending with chance picking the prize door and. Chance picking the non-prize door: therefore you should switch your choice. Frequency table: a table that shows all values of one categorical variable and lists what percentage of test cases fall under that value: think of it like a pie chart turned into a table! Contingency table: a table that shows two categorical variables" values (generally these are overlapping values) and lists how many test cases fall under each value.
