Descriptive vs. Inferential Two branches of Statistics 12/31/2018

from Bluman 5th Ed. textbook (c) McGraw-Hill 1-1 Descriptive and Inferential Statistics (Bluman, 5th ed. © McGraw-Hill) Descriptive statistics consists of the collection, organization, summarization, and presentation of data. Inferential statistics consists of generalizing from samples to populations, performing estimations and hypothesis tests, determining relationships among variables, and making predictions. 12/31/2018 from Bluman 5th Ed. textbook (c) McGraw-Hill

From “Beginning Statistics” by Warren, Denley, Atchley, pages 7-8 “Two main branches” Descriptive Statistics: gathers, sorts, summarizes, and presents…. Raw data, graphs, tables, numerical summaries, etc. Inferential Statistics: deals with the interpretation of the information collected, typically conclusions about some hypothesis, estimating population parameters. (© 2008 Hawkes Learning Systems/Quant Systems) 12/31/2018

A Point of Transition The early part of Math 2205 is about Descriptive Statistics, frequency distributions, probability distributions, graphs and charts. The later part of Math 2205 turns to Inferential Statistics Confidence intervals Hypothesis testing Correlation, Regression, and making predictions 12/31/2018