×

### Let's log you in.

or

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

×

### Create a StudySoup account

#### Be part of our community, it's free to join!

or

##### By creating an account you agree to StudySoup's terms and conditions and privacy policy

Already have a StudySoup account? Login here

by: KhloNotes

35

1

3

# Chapter 3-4 Study Guide Psych 2110

KhloNotes
UA

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

×
Unlock Preview

### Preview these materials now for free

Why put in your email? Get access to more of this material and other relevant free materials for your school

Study guide for Exam 2. Happy Studying!
COURSE
PROF.
Andre Souza
TYPE
Study Guide
PAGES
3
WORDS
CONCEPTS
Psychology
KARMA
50 ?

## Popular in Psychology (PSYC)

This 3 page Study Guide was uploaded by KhloNotes on Saturday September 24, 2016. The Study Guide belongs to Psych 2110 at University of Alabama - Tuscaloosa taught by Andre Souza in Fall 2016. Since its upload, it has received 35 views. For similar materials see Elem Statistics Business in Psychology (PSYC) at University of Alabama - Tuscaloosa.

×

## Reviews for Chapter 3-4 Study Guide

×

×

### 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: 09/24/16
From 211 Elementary Statistical Methods (Psychology) ; Professor Souza   Chapter 3 & 4 Test Review     Ideas Stressed in Chapter Three:   ­ Chapter Three homework is very important for Exam 2  ­ Practice reading graphs (examples are lower)  ­ Familiarize yourself with the terms and formats used for questions     Probability Distributions = ​A variable can take at least two different values (each possible  value has a probability that it occurs; lists all possible outcomes and probabilities)     Discrete Variables ​= specific values and that cannot have values between these specific values      Z­scores   ­ Transformation of a number into a correlating number from ­3 to 3 in order to find  probability     Z =  X−M ​r Z =  X−M   SD σ   ­ X symbolizing the score, M symbolizing the mean, and SD (or σ) symbolizing the  standard deviation   167−170 ­ For example, a girl has a height of 167. Z =  10 ​ thus z = ­.3 for probability.   ­ ­.3 relates to a number on the ­3 to 3 scale                                    From 211 Elementary Statistical Methods (Psychology) ; Professor Souza   Ideas Stressed/Re­stressed in Chapter Four:  ­ Statistics =​ random variables   ­ Inferential Statistics =​ procedures for drawing conclusion based on the scores collected  in a research study but going beyond them; creates an educated guess for studies where it  is impossible to question the entire population    ­ Memorize the Standard Distribution Variance Formula (Depicted below)      Hypothesis Test = ​A sample statistic is the best option for making an educated guess      Summary of the five steps of the​ hypothesis­testing procedure:  1. Restate the question as a research hypothesis and a null hypothesis about the  populations.  2. Determine the characteristics of the comparison distribution.  3. Determine the cutoff sample score on the comparison distribution at which the  null hypothesis should be rejected.  4. Determine the​ sample's score on the comparison distribution.  5. Decide whether to reject the null hypothesis.    Showing the null hypothesis to be true would mean showing that there is absolutely no difference  between the populations. It is always possible that there is a difference between the populations  but that the differenc​ e is much smaller than the particular study was able to detect. Therefore,  ​ when a result is not extreme enough to reject the null hypothesis, the results are said to be  inconclusive.    Central Limit Theorem     σ    Formula:     √n Standard Error =​ How much the sample mean would vary if we took several samples at the  same size from the same sample    Application   1. Usually just grab one sample  2. Take the z­score for this sample (distance from the mean)   Formula: z =  x̄   σ    √n x − M    or z =   SD         From 211 Elementary Statistical Methods (Psychology) ; Professor Souza   Hypothesis Testing Cont.   ­ Objective = ​check whether a set of data agrees with a certain prediction   ­ Prediction = hypothesis → statement about a population, a guess that a parameter  takes a particular numerical value or falls within a particular interval, systematic  way to test claims or ideas about a population   ­ A significance test uses data to summarize the evidence about a hypothesis (comparing  sample statistics or point estimates of parameters) to the values predicted by the  hypothesis    Four Basic Steps   ­ State the hypothesis  ­ Set a criteria for decision (basically choose a α­level) ​*Has to be done before  observations   ­ Compute the test statistic (collect data)  ­ Compare and make a decision       Happy Studying!

×

×

×

### You're already Subscribed!

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."

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."

Parker Thompson 500 Startups

#### "It's a great way for students to improve their educational experience and it seemed like a product that everybody wants, so all the people participating are winning."

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

Satisfaction Guarantee: If you’re not satisfied with your subscription, you can contact us for further help. Contact must be made within 3 business days of your subscription purchase and your refund request will be subject for review.

Please Note: Refunds can never be provided more than 30 days after the initial purchase date regardless of your activity on the site.