QMS 102 Lecture Notes - Continuous Or Discrete Variable, Ryerson University, Level Of Measurement

• School: Ryerson University
• Department: Quantitative Methods
• Course: QMS 102
• Professor: Sheila Rosenberg

Document Summary

Data are information or facts in a form that can be stored and used. Statistics is a branch of applied mathematics used for collecting, organizing, presenting, analyzing, and interpreting data. Statistics is divided into two categories: descriptive statistics focuses on collecting, organizing, presenting, and analyzing data. Inferential statistics uses data that have been collected from a smaller group to infer (draw or conclude) something about a larger group. Data collection is the process of gathering information using questionnaires/surveys, interviews, experiments, etc. Data may be collected from two sources: primary data- the raw or original data collected directly from respondents using surveys and observations, secondary data- collected by another source (stats canada, or government data) Population is a group that includes all objects/subjects in your study. Population size is the number of subjects in that population. Census is a set of data that includes all members of a population. Sample is a subset of a population.