×

### Let's log you in.

or

Don't have a StudySoup account? Create one here!

×

or

## Chapter 3 Notes - MAT 221

by: Niki Neidhart

9

0

2

# Chapter 3 Notes - MAT 221 MAT 221 - M200

Marketplace > Syracuse University > Math > MAT 221 - M200 > Chapter 3 Notes MAT 221
Niki Neidhart
Syracuse
GPA 3.78

Get a free preview of these Notes, just enter your email below.

×
Unlock Preview

Chapter 3 notes - about producing data through observational and experimental studies
COURSE
Elements of Mathematical Statistics and Probability Theory
PROF.
X. Au
TYPE
Class Notes
PAGES
2
WORDS
CONCEPTS
math; statistics; response; observational; experimental
KARMA
25 ?

## Popular in Math

This 2 page Class Notes was uploaded by Niki Neidhart on Tuesday February 9, 2016. The Class Notes belongs to MAT 221 - M200 at Syracuse University taught by X. Au in Spring 2016. Since its upload, it has received 9 views. For similar materials see Elements of Mathematical Statistics and Probability Theory in Math at Syracuse University.

×

## Reviews for Chapter 3 Notes - MAT 221

×

×

### What is Karma?

#### You can buy or earn more Karma at anytime and redeem it for class notes, study guides, flashcards, and more!

Date Created: 02/09/16
Chapter 3 Producing Data – MAT 221 3.1 & 3.2 - Sources of Data & Design of Experiments Anecdotal Data – unusual cases that we draw conclusions from past experiences - May not me representative of any larger group of cases Available Data – past data we produced that may help us Population – the entire group of individuals we are studying Parameter – the part of the population we are studying and have data for Statistic – a number describing a characteristic of a sample Experimental units – the individuals in an experiment - Called Subjects if they are human - Treatment or factor: the “something” we do to a subject that’s response gets measured Observational Study: Simply observing and recording data of individuals without influencing responses - Cannot establish cause and effect relationships Experimental Study – Deliberately giving individuals a sort of treatment and recording their responses Control – a situation where no treatment is given; serves as reference mark/basis Placebo – a fake treatment to test that the results are from the actual treatment and not the subjects belief that they are being treated Ronald Fisher (1890 – 1962) – randomized comparative experiments; fertilizer Principles of Experimental Design: 1. Control the effects of lurking variables 2. Randomize 3. Replicate treatment on enough subjects to reduce chance of variation in results Biased – systematically favoring certain outcomes - Random assignment is the best way to avoid Blind experiment – one in which the subjects do not know which treatment they are getting until the experiment it completed Double-Blind Experiment – neither the subjects or the experimenter know who has the treatment until the experiment is over 3.3 – Sampling Design - We don’t always get a response from everyone in our sample - Response Bias: people don’t always respond truthfully - Wording effects: the way a question is worded may influence a certain response 3.4 – Toward Statistical Inference Statistical Inference – the process of drawing conclusions about a population from data obtained from a sample Sampling Variability – every time we take a random sample from a population we are likely to get a different set of individuals/ statistics Sampling Distribution – the distribution achieved by repeating the study many times with the same sample size - The larger the sample size, the lower the sample variability - The better the data-collecting technique, the lower the bias

×

×

### BOOM! Enjoy Your Free Notes!

×

Looks like you've already subscribed to StudySoup, you won't need to purchase another subscription to get this material. To access this material simply click 'View Full Document'

## Why people love StudySoup

Steve Martinelli UC Los Angeles

#### "There's no way I would have passed my Organic Chemistry class this semester without the notes and study guides I got from StudySoup."

Amaris Trozzo George Washington University

#### "I made \$350 in just two days after posting my first study guide."

Jim McGreen Ohio University

Forbes

#### "Their 'Elite Notetakers' are making over \$1,200/month in sales by creating high quality content that helps their classmates in a time of need."

Become an Elite Notetaker and start selling your notes online!
×

### Refund Policy

#### STUDYSOUP CANCELLATION POLICY

All subscriptions to StudySoup are paid in full at the time of subscribing. To change your credit card information or to cancel your subscription, go to "Edit Settings". All credit card information will be available there. If you should decide to cancel your subscription, it will continue to be valid until the next payment period, as all payments for the current period were made in advance. For special circumstances, please email support@studysoup.com

#### STUDYSOUP REFUND POLICY

StudySoup has more than 1 million course-specific study resources to help students study smarter. If you’re having trouble finding what you’re looking for, our customer support team can help you find what you need! Feel free to contact them here: support@studysoup.com

Recurring Subscriptions: If you have canceled your recurring subscription on the day of renewal and have not downloaded any documents, you may request a refund by submitting an email to support@studysoup.com