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

Stats 201 notes week 1&2

by: Victoria Notetaker

Stats 201 notes week 1&2 Stat 201

Marketplace > Colorado State University > Statistics > Stat 201 > Stats 201 notes week 1 2
Victoria Notetaker
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 General Statistics

(Limited time offer)

Unlock Notes

Already have a StudySoup account? Login here

Unlock FREE Class Notes

Enter your email below to receive General Statistics 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 are for the first and second week
General Statistics
Xiaowen Hu
Class Notes




Popular in General Statistics

Popular in Statistics

This 2 page Class Notes was uploaded by Victoria Notetaker on Saturday January 16, 2016. The Class Notes belongs to Stat 201 at Colorado State University taught by Xiaowen Hu in Spring 2016. Since its upload, it has received 67 views. For similar materials see General Statistics in Statistics at Colorado State University.


Reviews for Stats 201 notes week 1&2


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: 01/16/16
Population is the entire collection of items of interest Parameter is a numerical value associated with population Census is a measurement obtained by every unit in a population Sample is a small part of the population meant to show patterns of the whole population Simple Random Sample (SRS) everyone has en equal chance of being selected for a sample Self Selected Sample (volunteer sample) you chose to participate Statistic is a piece of data from a study of a quantity of numerical data Sampling error is an error that comes from a random fluctuation Non-sampling error is when data is collected, recorded or analyzed incorrectly Types of variable 1. Qualitative or categorical (non numerical data) a. Nominal- 2 or more categories with no intrinsic ordering to the categories i. Ex. Gender, colors b. Ordinal- 2 or more categories with levels of organization i. Ex. Letter grade or rankings c. Can use pie charts, bar charts, multiple bar charts, pareto charts 2. Quantitative or numeric (numerical date) a. Continuous- numeric data that can be a fraction or decimal i. Ex. Weight, height b. Discrete- numeric data that can only be whole numbers i. Ex. Number of pets or people c. Can use histograms Measure of locations 1. Mean is the average a. Add all numbers in set of data and divide by number of data points b. Uses all the data so may be affected by outliers 2. Median is the middle (Q2) a. The middle number in a set of data b. 50 percentile c. Uses 1 or 2 values and is unaffected by outliers 3. Q1 is the median of the first half of the data a. 25 percentile 4. Q3 is the median of the second half of the data a. 75 percentile 5. Range is the max-min 6. IQR is Q3-Q1 Deviation is the difference between data value and the mean Standard Deviation is how far the data is from the mean Coefficient of variation (CV)  Ratio of sample standard deviation to sample mean  Smaller CV means data is closer together Histograms are used for showing the distribution of a variable  Shape o Symmetric Mean=median o Skewed (Right) mean>median (left) mean<median  Center o Where is mean o Where is median  Spread o Variability in data


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

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."

Kyle Maynard Purdue

"When you're taking detailed notes and trying to help everyone else out in the class, it really helps you learn and understand the I made $280 on my first study guide!"

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!"


"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.