MATH 1202 Lecture Notes - Lecture 7: Statistical Inference, Infor, Histogram

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Sec 1. 1: population, samples and processes: population: a large group of people (or object) of a particular interest that we desire to study and understand. Ex: all the students at unb: sample: a representative part of the population. Ex: all 2nd year students at unb: variable: a variable is any characteristic whose value may change from one object to another in the pop- ulation. Ex: age, height, weight: branches of statistics, descriptive statistics: and summarize the data is used simply to describe, inferential statistics: is used to use sample infor- mation to draw some type of conclusion about the population. Sec 1. 2: pictorial and tabular methods in descrip- tive statistics: the table below is the scores of 50 students in a. 58 61 65 63 41 47 43 64 77 58: stem-and-leaf display. Histogram of scores y c n e u q e r.

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