ADMS 2320 Chapter Notes - Chapter 1: Ogive, Unimodality

• School: York University
• Department: Administrative Studies
• Course: ADMS 2320
• Professor: Hila Cohen

Document Summary

Adms2320 quiz #1 review - chapter 1 to 3. Data - facts, especially numerical facts, collected together for reference or information. Statistics - is a way to get information from data. Information - knowledge communicated concerning some particular fact. Population is a set of all items example. Sample - subset of observations drawn from a population. A company has developed a new battery, but the average lifetime is unknown. In order to estimate this average, a sample of 500 batteries is tested and the average lifetime of this sample is found to be 225 hours. The 225 hours is the value of a: Descriptive statistics are methods of organizing, summarizing and presenting data in an informative way through graphical and numerical ways. It gives you a measure of central location and measure of variability (dispersion). It presents a set of data (data) in such a way that is useful (information) is produced.