STAT 200 Lecture Notes - Lecture 1: Dependent And Independent Variables
Document Summary
Statistics are a collection of procedures and principles for gathering data and analyzing information to help people make decisions when faced with uncertainty. Sample data- collection from a subject of a larger population (used to inference larger pop) Population data- are collected when all individuals in a population are measure (all information) Statistic- a summary measure of sample data. Statistics are not always equal to parameter. Raw data - numbers and category labels that have been collected but have not yet been processed in anyway. Observation - an individual entity in a study. Variable - is a characteristic that may differ among individuals. Categorical variables - consists of group or category names that don"t necessarily have a logical order ex. eye color/ nationality. Ordinal variables - categorical variables that have logical order ex. highest degree earned/shirt size. Quantitative variable - raw data that consists of numerable values taken on each individual"s. Many questions about the relationships between two variable.
