STAT151 Study Guide - Midterm Guide: Sample Space, Oceanic Airlines, Pie Chart

• School: University of Alberta
• Department: Statistics
• Course: STAT151
• Professor: Gregory Wagner

Document Summary

Statistics: a way of reasoning along with a collection of tools and methods designed to help further our understanding of how the world deals with data. Statistical methods are used in areas such as: The process of making a data driven decision goes as follows: state the data, how to collect the data, collect data, draw a srs (simple random sample) from population, summarize data, use statistical tools to make an inference. Parameter: a number that describes certain characteristics of a population. Statistic: a number that describes certain characteristics of a sample. Y - ( a y-bar) = sample mean, can also be symbolized as an x-bar. 1) i want to estimate the proportion of male students for this stat 151 lecture by randomly selecting 10 students in this class. Population of interest: every stat 151 student in that class. Parameter: proportion of male students in the lecture. Statistic: proportion of male students in this sample.