STAT 100 Study Guide - Midterm Guide: Simple Random Sample, Confidence Interval, Statistic

• School: Simon Fraser University
• Department: Statistics
• Course: STAT 100
• Professor: Gaitri Yapa

Document Summary

Individuals objects described by a set of data (ie. people, animals, things, names, months, time of year, people in a study). Variables characteristics of the individuals. (ie. major, gpa, average temp, gender, income, bacteria type). Categorical variables places individual into groups. (ie. major, grades, job, gender). Numerical variables numerical values for operations to make sense (ie. age, income). Observational study observes variables for individuals without interfere with responses. Response variable measures outcome or results in study. Experiments imposes treatments on individuals in order to observe and record cause & effect of. Sample survey part of pop where info was collected from (important in observational studies), surveys groups of individuals by studying only some of its members to represent an entire group. Population entire group of individuals where info was collected from (ie. canadian residents, ctv viewers). Sample part of pop where we collect info from to draw conclusions about the whole pop (ie. participants in a poll, households).