SOC222H5 Study Guide - Binomial Distribution, Standard Deviation, Statistic
Document Summary
Statistics: process of analyzing data- using scientific methods to answer questions/make decisions. Random sampling: used to avoid bias results in a study ( pick out of hat method) Descriptive statistics: numbers that describe data set in terms of its important features. Defn: numbers that summarize some characteristic about a set of data. Ordinal data: data appears in categories and can be organized in some order (i. e. smallest to largest) Add up all numbers in data set, 2. Divide by number of total cases in data set (n) Median (m): arrange values in data set from smallest to largest and find the middle number. Q1: 25th percentile in the data set (first quartile) Q3: 75th percentile (third quartile) the median: (50th percentile) Purpose is to display and organize data. Bar graphs: breaks categorical data down by group showing how many people lie in each category or what percentage lies in each group.
