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Get Full Access to USC - STAT 110 - Class Notes - Week 1
Get Full Access to USC - STAT 110 - Class Notes - Week 1

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USC / Statistics / STAT 110 / stat 110 notes

# stat 110 notes Description

##### Description: Notes for chapter 1 and chapter 2
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Where Do Data Come From?  The field of statistics is applicable in every discipline. To give an idea of how widespread its use  is, consider the following examples illustrating the scope of applications:  From ratemyprofessors.com, STAT 110 instructors often get comments about the practice test  looking like the real exam…..should you believe this claim? Here are some interesting stats  from Exam 2 last semester  Summary statistics:  •   Column n Mean Variance Std. Dev. Std. Err. Median Range Min Max Q1 Q3

Exam 2

379 78.51715 318.37735 17.843132 0.9165401

82  102 0  102  70  90

## ﻿Where Do Data Come From?

•  A claim found on MedPageToday  http://www.medpagetoday.com/Pediatrics/GeneralPediatrics/36848?utm_content=&utm_medium=email&utm_campaign=DailyHeadlines&utm_s ource=WC&xid=NL_DHE_2013-01-15&eun=g387768d0r&userid=387768&email=leslieahendrix@gmail.com&mu_id=5380723 “Fast Foods Tied to Allergies, Excema in Kids”  Can we believe this claim? Let’s look at the article….  Another claim found on MedPageToday  http://www.medpagetoday.com/MeetingCoverage/AAIC/33780?utm_source=breaking-news&utm_medium=email&utm_campaign=breaking news “IVIG Stops Alzheimer’s in Its Tracks”  51% of adults age 18 and older are married today – 72% in 1960  http://www.pewsocialtrends.org/2011/12/14/barely-half-of-u-s-adults-are-married-a-record-low/?src=sdt-carouselStatistics is the science (or art) of data.  _____________________are the objects described by a set of data. Individuals may be  Individuals people, but they may also be animals or things.  A _____________________is any characteristic of an individual. A variable can take different  Variable values for different individuals.  Values The actual measurements recorded for individuals are called ___________.  Example 1   What are the individuals?  Students enrolled   What are the variables?  major, points, grade Example 2   Individuals?  Cars  Variables?  -make/model -vehicle type -transmission type -cylinders -city MPG/ highway MPGName Major Points Grade Advani, Sura Comm 397 B Barton, David Hist 323 C  Brown, Annette Lit 446 A  Chiu, Sun Psyc 405 B  Cortez, Maria Psyc 461 A  Make Vehicle Transmission Cylinders City Highway   Subcompact Automatic 6 19 Subcompact Manual 6 20 Midsize Automatic 6 20

## What are the individuals?

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