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 250, Week 1 Notes - Lecture 1

by: Debra Tee

STATS 250, Week 1 Notes - Lecture 1 STATS 250

Marketplace > University of Michigan > Statistics > STATS 250 > STATS 250 Week 1 Notes Lecture 1
Debra Tee
GPA 3.85

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

Basic Principles and Course Goals
Introduction to Statistics
Brenda Gunderson
Class Notes
25 ?




Popular in Introduction to Statistics

Popular in Statistics

This 3 page Class Notes was uploaded by Debra Tee on Friday April 8, 2016. The Class Notes belongs to STATS 250 at University of Michigan taught by Brenda Gunderson in Fall 2016. Since its upload, it has received 8 views. For similar materials see Introduction to Statistics in Statistics at University of Michigan.


Reviews for STATS 250, Week 1 Notes - Lecture 1


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: 04/08/16
Lecture  1:  Statistics  Info  and  some  Basic  Principles       -­‐    Statistics  is  the  most  important  science  in  the  whole  world:  for  upon  it   depends  the  practical  application  of  every  other  science  and  of  every  art:   the  one  science  essential  to  all  political  and  social  administration,  all   education,  all  organization  based  on  experience,  for  it  only  gives  results  of   our  experience."  Florence  Nightingale,  Statistician     -­‐   Statistics  are  numbers  measured  for  some  purpose.     -­‐   Statistics  is  a  collection  of  procedures  and  principles  for  gathering  data  and   analyzing  information  in  order  to  help  people  make  decisions  when  faced   with  uncertainty.       -­‐   Course  Goal:  Learn  various  tools  for  using  data  to  gain  understanding  and   make  sound  decisions  about  the  world  around  us.       -­‐   Chapter  1  starts  out  with  eight  statistical  stories  with  morals,  presented  as   seven  case  studies.       -­‐   In  each,  data  are  used  to  make  a  decision,  a  judgment,  about  a  situation.   These  case  studies  follow  a  wide  range  of  ideas  and  methods  and  introduce   a  lot  of  statistical  language.       -­‐   1.  Who  are  those  speedy  drivers?   Principle:  Simple  summaries  of  data  can  tell  an  interesting  story  and  are   easier  to  digest  than  long  lists.     2.  Safety  in  the  Skies?     Principle:  When  discussing  the  change  in  the  rate  or  risk  of  occurrence  of   something,  make  sure  you  always  include  baseline  or  base  rates.     3.  Did  anyone  ask  whom  you’ve  been  dating?   Principle:  A  representative  sample  of  only  a  few  thousand,  or  perhaps  even   a  few  hundred,  can  give  reasonably  accurate  information  about  a   population  of  many  millions.     4.  Who  are  those  angry  women?   Principle:  An  unrepresentative  sample,  even  a  large  one,  tells  you  almost   nothing  about  the  population.     5.  Does  prayer  lower  blood  pressure?   Principle:  Cause-­‐and-­‐effect  conclusions  cannot  generally  be  made  on  the   basis  of  an  observational  study.       6.  Does  Aspirins  reduce  heart  attack  rates?   Principle:  Unlike  with  observational  studies,  cause-­‐and  effect  conclusions   can  generally  be  made  on  the  basis  of  randomized  experiments.         7.  Does  the  internet  increase  loneliness  and  depression?     Principle:  A  statistically  significant  finding  does  not  necessarily  have   practical  significance  or  importance.  When  a  study  reports  a  statistically   significant  finding,  find  out  the  magnitude  of  the  relationship  or  difference.     8.  Did  your  mother’s  breakfast  determine  your  sex?     Principle:  For  studies  that  found  a  relationship  or  difference,  find  out  how   many  different  things  were  tested.  The  more  tests  done,  the  more  likely  a   statistically  significant  difference  is  a  false  positive  that  can  be  explained  by   chance.  Watch  out  if  many  things  are  tested  and  only  1-­‐2  of  them  are   statistically  significant.        


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

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."

Janice Dongeun University of Washington

"I used the money I made selling my notes & study guides to pay for spring break in Olympia, Washington...which was Sweet!"

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."


"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.