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

Stat 2004 Week 8: Z-Score and Normality

by: Mara DePena

Stat 2004 Week 8: Z-Score and Normality STAT 2004

Mara DePena
Virginia Tech
GPA 3.62

Preview These Notes for FREE

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

Unlock Preview
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

View Preview

About this Document

These notes cover z-score and normality- this topic is less dense than most, as most problems are easily solved using the chart that is provided in class.
Introductory Statistics
Class Notes
z-score, normality, Probability
25 ?




Popular in Introductory Statistics

Popular in Statistics

This 1 page Class Notes was uploaded by Mara DePena on Sunday March 20, 2016. The Class Notes belongs to STAT 2004 at Virginia Polytechnic Institute and State University taught by Metzger in Spring 2016. Since its upload, it has received 13 views. For similar materials see Introductory Statistics in Statistics at Virginia Polytechnic Institute and State University.


Reviews for Stat 2004 Week 8: Z-Score and Normality


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: 03/20/16
STAT 2004 WEEK 8 Z-SCORE PROBLEMS  Z-score- How many standard deviations away from the mean the observation is. o Z= (observation – mean) / standard deviation o There is a chart that lists the z-scores, and using this chart you can determine the percentage of observations under the left part of the curve corresponding to that z-score.  The steps to solving a problem involving z-score: o Start with an observation o Find the z-score(s) o Look up the corresponding probabilities in the chart  “Less than”: Keep value from table  “More than”: 100% - table value  “Between”: Difference in table values. EVALUATING NORMALITY 68-95-99.7 (Empirical) Rule o For any normal distribution, one standard deviation away is 68%, two is 95%, and three is 99.7%.


Buy Material

Are you sure you want to buy this material for

25 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

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!"

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


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.