New User Special Price Expires in

Let's log you in.

Sign in with Facebook


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


Create a StudySoup account

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

Sign up with Facebook


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

Already have a StudySoup account? Login here

Statistics Notes

Star Star Star Star Star
1 review
by: Khatren Reed

Statistics Notes Psych 312

Khatren Reed
View Full Document for 0 Karma

View Full Document


Unlock These Notes for FREE

Enter your email below and we will instantly email you these Notes for Introduction to Research Methods

(Limited time offer)

Unlock Notes

Already have a StudySoup account? Login here

Unlock FREE Class Notes

Enter your email below to receive Introduction to Research Methods notes

Everyone needs better class notes. Enter your email and we will send you notes for this class for free.

Unlock FREE notes

About this Document

These notes cover scales of measurement and descriptive statistics
Introduction to Research Methods
Samantha swindell
Class Notes
Statistics, Psychology




Star Star Star Star Star
1 review
Star Star Star Star Star
"Almost no time left on the clock and my grade on the line. Where else would I go? Khatren has the best notes period!"
Holly McDermott

Popular in Introduction to Research Methods

Popular in Psychlogy

This 2 page Class Notes was uploaded by Khatren Reed on Sunday January 31, 2016. The Class Notes belongs to Psych 312 at Washington State University taught by Samantha swindell in Summer 2015. Since its upload, it has received 40 views. For similar materials see Introduction to Research Methods in Psychlogy at Washington State University.


Reviews for Statistics Notes

Star Star Star Star Star

Almost no time left on the clock and my grade on the line. Where else would I go? Khatren has the best notes period!

-Holly McDermott


Report this Material


What is Karma?


Karma is the currency of StudySoup.

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

Date Created: 01/31/16
2/2/16: Scales of Measurement Measurement: • Lets us test our hypothesis • Relates to our operational definition (how we translate variable/concept into something that can be recorded and measured) • Should be reliable and valid 1. Reliable (consistent/shows same effect repeatedly) 2. Valid (Reflects the variable you say it measures) Important to note: o A measurement can be reliable but not valid o A measure cannot be valid without also being reliable Internal validity of a study depends upon the reliability and validity of the measures within that study Scales of Measurement: Rules we use to transform observations into #’s Determines how we analyze, display and interpret the data Types of Scales of Measurement are: o Nominal • Numbers represent categories or labels • Differences between the categories are qualitative, not quantitative • You cannot add, subtract, multiply/divide data that is nominal • You can only calculate frequency/percentage in each category o Ordinal • Categories and rank • #’s reflect some degree of quantitative difference • Differences between values are not necessarily equal o Interval • Values related by a underlying quantitative dimension with equal intervals between the scale values • (Can be negative/positive and zero) • No absolute or true zero point o Ratio • Can add/subtract, multiple/divide • Cannot make claims based on relative magnitude • Can have absolute zero 2/4/16 Descriptive Statistics Frequency Distribution: st • 1 step for handling data • Indicates how frequently each value or score appears in the data set • Presented as a graph or table Example: Shoe Size Frequency 6 4 7 8 8 1 9 3 10 0 11 1 Mean To calculate mean: Add up row and divide by how many values are in the row Median The middle score (score that cuts the distribution in into 2 equal halves) Mode Most frequent score


Buy Material

Are you sure you want to buy this material for

0 Karma

Buy Material

BOOM! Enjoy Your Free Notes!

We've added these Notes to your profile, click here to view them now.


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

Jim McGreen Ohio University

"Knowing I can count on the Elite Notetaker in my class allows me to focus on what the professor is saying instead of just scribbling notes the whole time and falling behind."

Allison Fischer University of Alabama

"I signed up to be an Elite Notetaker with 2 of my sorority sisters this semester. We just posted our notes weekly and were each making over $600 per month. I 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."


"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


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


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:

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

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.