SOC/STAT/CSSS 221: Statistical Concepts and Methods for the Social Sciences
Homework Assignment 2
Please use this form to record your answers and include any work that you would like to show the grader (you
can paste in photos or scans of your handwritte
1. For the following density curve, the median is
0.5
0.4
0.3
0.2
0.1
0.0
0
*
1
2
3
4
a. 0.50.
b. 1.50.
c. 2.00.
d. 3.50.
2. A Normal density curve has which of the following properties?
a. It is symmetric.
b. It has a peak centered above its mean.
c. The
CS&SS/SOC/STAT 221: Quiz 2
April 23, 2015
VERSION: A
Question 1 (0.5 pts)
A company has three divisions and three conference rooms for meetings. To keep track of the
use of their facilities, for each meeting held in the company, the division holding the m
Introductory Statistics
OpenStax College
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Houston, Texas 77005
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201
CS&SS/SOC/STAT 221: Quiz 4
May 21, 2015
VERSION: A, B
PRINT NAME:
QUIZ SECTION:
INSTRUCTIONS:

Use your scantron for all multiple choice questions
Use the space provided on these sheets to show your computations
You will have until the end of the period
September 25, 2013
STATISTICS IS
NOT MATH!
THIS IS NOT
A MATH CLASS!
3
David Moore:
n k
P(X k) p (1 p) nk
k
Statistics is the science of data.
4
What is the probability of pulling
a red M&M out of a bag of 100
M&Ms?
What is the probability of pulling
SOC/STAT/CSSS 221: Statistical Concepts and Methods for the Social Sciences
Homework Assignment 1
1. What is the level of measurement (nominal, ordinal, or interval) for each of the variables collected
with the following items in our survey?
Level of
Item
October 9, 2013
HW 2 due Thursday
Online
Instructions
for submission on website
Quiz Thursday in section
30
mins, dont be late
Bring a scantron sheet and CALCULATOR
Chs 8, 9, 1
Questions?
FIRST Read instructions, read syllabus,
look on website, study
October 14, 2013
Quiz 1 answers posted after class on Canvas
I am not covering everything in class
Quartiles
Interquartile
Finding
range
outliers using quartiles
Boxplots
READ and STUDY the textbook!
Quiz 2 on Thursday Chapters 2 and 3
Measures of c
September 27, 2013
Everything posted on website
Lectures Files link
Homeworks Assignments link
Survey instructions and questionnaires Assignments
link HW 1 or Files link
Group project instructions Assignments or Files links
CSSCR, Stats Tutoring,
October 4, 2013
Section schedule
Tuesday and Thursday regular classrooms from now
on.
Homework 2
Due Thursday 9 a.m.
Typed or legibly handwritten.
Make your answer clear. If grader cannot find your
answer, then you get it wrong!
Submit online through
October 7, 2013
Presentations in section
Group is responsible for the project
Individuals are responsible for presentations each
person does one presentation during the quarter
See group project instructions for suggested content
of presentations
34
October 2, 2013
Section schedule
Thursday
Lanus sections do SPSS Savery 117
Homework 1 due tomorrow online
Except for Lanus sections due on Monday
If youre unsure how to submit homework online,
instruction sheet on website, Files link.
Homework 2 poste
September 30, 2013
Section schedule
Tuesday
Thursday
Julies sections do SPSS Savery 117
Yalis sections do SPSS Savery 121
Lanus sections do SPSS Savery 117
Participation
You dont have to email me if you miss class
5 free absences
Youre adults, I trus
Introduction Review Median and quartiles Outliers Mean and standard deviation Summary
1/23
Chapter 2: Describing Distributions with Numbers
STAT/SOC/CSSS 221
Patricia Martinkova
University of Washington
Lecture 7: April 13, 2015
Introduction Review Median
Introduction Density curves Normal distributions 689599.7 rule Standard scores
1/32
Chapter 3: The Standard Normal Distributions
STAT/SOC/CSSS 221
Patricia Martinkova
University of Washington
Lecture 8: April 15, 2015
Introduction Density curves Normal
October 21, 2013
Homework 2, question 2b
Answer was 79%
Scored wrong if you got (2), youll get it
back.
Quiz on Thursday
Zscores
and standardization
Chapter
4
Chapter
5
Now compare 2 variables.
Were
looking for relationship or associations.
Remembe
October 16, 2013
Quiz 2 on Thursday Chapters 2 and 3
(Except zscores and standard normal
tableIll put that on next weeks quiz).
Survey data posted!
Files>Survey>
Data set SOCSTATCSSS 221 Fall
2013.sav
Define and describe density curves.
Define and d
December 2, 2013
Wednesday:
 Lanu guest lecture
Thursday:
 Quiz chs 19, 20, 22, 23, 24
Topics:
 Which is the correct test to use for different
situations/variables
 How to write hypotheses for each test.
 How to find and interpret pvalues for each
November 22, 2013
No quiz or homework next week.
No class Weds, Thurs, Fri next week.
Section on Tuesday quiz review for the next
week
Keep up on reading. Next lecture class (Dec
2) will cover 3 chapters of statistical tests!
If results show no differenc
November 18, 2013
Quiz on Thursday
One
sample ttests
Matched
Two
pairs ttests
sample ttests
(Hypothesis testing (pvalues) only.
No questions on confidence intervals.)
Course evaluations on Wednesday
Use when:
You dont know the population std dev.
M
November 20, 2013
Understand which tests to use for which
kinds of variables.
Undertake tests of statistical
significance in SPSS.
Quiz on Thursday
One
sample ttests
Matched
Two
pairs ttests
sample ttests
(Hypothesis testing (pvalues) only.
No ques
November 15, 2013
Describe when t distributions are used
Check the conditions necessary for inference
Construct and interpret a onesample t confidence
interval
Perform a onesample t test
Perform a matched pairs t test
Our objectives:
 When to use one s
November 13, 2013
Chapter 14
Test
hypotheses
Understand
p and values.
Overview of the rest of class
Hypothesis
Type
testing with real scenarios
of variable determines test
This weeks quiz:
Chapter 14 Hypothesis testing
Pvalues
levels
Two steps in stati
November 1, 2013
Amongst the major dangers of the Cascade
volcanoes are Lahars.
USGS report on dangers posed by Cascade volcanoes
http:/www.emd.wa.gov/plans/documents/ehmp_5.9_v
olcano.pdf
Using the data from the USGS report on probabilities of
lahars fro
November 6, 2013
Review meaning of confidence intervals
Calculate confidence intervals
Understand meaning of hypothesis tests
Write null and alternative hypotheses
Test hypotheses
Understand p and values.
This weeks quiz:
Chapter 10 probability
Chapter
November 4, 2013
This weeks quiz:
Chapter
10 probability
Chapter
11 Sampling distributions
Chapter
14 Intro to inferenceconfidence intervals only (no
hypothesis testing or ).
Two parts
Use
what you know about a sample (a
statistic), to make a guess
October 30, 2013
Quiz Thurs
Chapters
6
Iraq mortality article
Bring:
Usual
pencil, scantron, calculator, page
notes
Iraq mortality article
Understand why we study probability for statistics
Describe the idea of probability
Describe chance behavior w
October 25, 2013
Learn how to do the following in SPSS:
Deal
with missing and incongruent data.
Calculate
Create
numerical descriptions of variables
graphs of variable distributions
Create
numerical descriptions, graphs, and tables to
test associations.
DISCUSSION OF RANKING
DATA
By YALI WAN
Ranking Data
Despicable me : 1
Iron Man : 2
Life of Pi : 3
Titanic: 4
Ranking the
movies
My Ranking: 4312
Jasons Ranking: 243
Linas Ranking: 4
Pennys Ranking:
1432
Ranking Data
Economics: 1 Preference of Choosing
Cla
Name: _
Student Number: _
SOC/STAT/CSSS 221: Statistical Concepts and Methods for the Social Sciences
*Homework Assignment 1*
Please use this form to record your answers and include any work that you would like to show the
grader (you can paste in photos