Statistical Sciences 1023A/B Study Guide - Midterm Guide: Unimodality, Percentile Rank, Quartile

• School: Western University
• Department: Statistical Sciences
• Course: Statistical Sciences 1023A/B
• Professor: Jennifer Waugh

Document Summary

Introduction: problems. make decisions. made without using statistical or scientific methods. Theoretical statistics: development, deviation and proof of statistical theories rules and laws. Statistics: a group of methods used to collect, analyze, present and interpret data and to. Educated guesses - decisions made by using statistical methods, vs. pure guesses - Applied statistics: application of theories formulas rules and laws to solve real-world. Descriptive statistics: consists of methods for organizing, displaying and describing data. Population: consists of all elements whose characteristics are being studied. Census: survey that includes every member of the target population, vs. sample survey: Representative sample: a sample that represents characteristics of the population as. Random sample: sample drawn such that every element of the population has a chance. Nonrandom sample: some members of the pop may not have any chance of being by using tables, graphs and summary measures. Sampling error: difference between the result obtained from a sample and the result if.