×

### Let's log you in.

or

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

×

or

## Psy 202, Chapter 5

by: T'Keyah Jones

4

0

2

# Psy 202, Chapter 5 Psy 202

T'Keyah Jones
OleMiss
GPA 3.0

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

×
Unlock Preview

These notes cover the beginning of Chapter 5: Sampling and Confidence Intervals.
COURSE
Elementary Statistics
PROF.
Dr. Melinda Redding
TYPE
Class Notes
PAGES
2
WORDS
CONCEPTS
elementary statistics, Psychology
KARMA
25 ?

## Popular in Psychology (PSYC)

This 2 page Class Notes was uploaded by T'Keyah Jones on Tuesday September 13, 2016. The Class Notes belongs to Psy 202 at University of Mississippi taught by Dr. Melinda Redding in Fall 2016. Since its upload, it has received 4 views. For similar materials see Elementary Statistics in Psychology (PSYC) at University of Mississippi.

×

## Reviews for Psy 202, Chapter 5

×

×

### 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: 09/13/16
September 13, 2016 a. Types of Samples Representative sample The proportions of the variable in the population are accurately reflected in the sample Convenience sample Common, but unlikely to be representative Sample is convenient Random sample Is one in which all cases in the population have an equal chance of being selected Does not guarantee representative sample All combinations are possible with truly random sample b. Problems with Sampling Self-selection Bias Occurs when not everyone who is asked to participate in a study agrees to do so Sampling Error Reflects discrepancies between sample values and population values due to random factors Not systematic There is a difference between sample statistic and population parameter c. Sampling Distribution Distribution made up of sample statistics Generated by: - Taking repeated random samples of a specific size from a population - Calculating some statistics (like a mean) for each sample - Making a frequency distribution of those values The standard deviation of this distribution is called the standard error of the mean ( )M M M Grand mean of means True population mean d. Central Limit Theorem Tells us three things: - If N is large The sample distribution of the mean will be normally distributed No matter what they shape of the population distribution or the shape of the population distribution - The mean of the sampling distribution Is the same as the mean of the population from which the samples were selected - The Standard Error of the M Standard deviation of the sampling distribution can be calculate with this formula: M=  √N When  is unknown, the standard deviation of sample can be used to estimate the standard error of the mean: sM= s √N

×

×

### 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

Bentley McCaw University of Florida

#### "I was shooting for a perfect 4.0 GPA this semester. Having StudySoup as a study aid was critical to helping me achieve my goal...and I nailed it!"

Jennifer McGill UCSF Med School

#### "Selling my MCAT study guides and notes has been a great source of side revenue while I'm in school. Some months I'm making over \$500! Plus, it makes me happy knowing that I'm helping future med students with their MCAT."

Bentley McCaw University of Florida

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