Introduction to Statistics for the Social Sciences
STAT 203

Fall 2015
QUIZ#4
We wish to see if, on average, trafc is moving at the posted speed limit of 65 miles per hour
along a certain stretch of Interstate 70. On each of four randomly selected days, a randomly
sele
Assignment # 1 Due on May 24th before 4 pm.
1. Page 20 Q # 1.4
2. Page 44 Q # 1.42
a) Make a Histogram instead of two stemplots using SPSS.
3. Page 60 Q # 2.10
c) Use SPSS to calculate xbar and s.
4.
Introduction to Statistics for the Social Sciences
STAT 203

Fall 2015
Samuel Choi 301310974 (worked with Leo Li)
Statistics 203
Feb 1st 2017
Stat 203 Assignment 2
9.32
a) The explanatory variable is how much exercise a person got and the response
variable is how much ef
Introduction to Statistics for the Social Sciences
STAT 203

Fall 2015
Samuel Choi 301310974 (worked with Leo Li)
Statistics 203
Jan 20th 2017
4.28
a) The response and explanatory variables of new adults and percentage of returning birds have a
negative correlation and i
Introduction to Statistics for the Social Sciences
STAT 203

Fall 2015
Samuel Choi 301310974 (worked with Leo Li)
Statistics 203
Jan 20th 2017
1.30
The distribution is nonsymmetric and skewed to the right; positively skewed. The center
of the distribution is at 2 servin
Introduction to Statistics for the Social Sciences
STAT 203

Fall 2015
Samuel Choi 301310974 (worked with Leo Li)
Statistics 203
Feb 1st 2017
Stat 203 Assignment 2
8.32
a) The poll has in mind the adults of each household usually 4050 years of age that
watches movies of
Introduction to Statistics for the Social Sciences
STAT 203

Fall 2015
Samuel Choi 301310974 (worked with Leo Li)
Statistics 203
Jan 20th 2017
2.31
a) This data distribution of guinea pig survival times is rightskewed with the median
around 100 days, and range from abou
Introduction to Statistics for the Social Sciences
STAT 203

Fall 2015
Samuel Choi 301310974 (worked with Leo Li)
Statistics 203
Jan 20th 2017
2.32
a) We prefer a histogram of the percentages rather than using the frequency as it can
get confusing where the data is conce
Introduction to Statistics for the Social Sciences
STAT 203

Fall 2015
Samuel Choi 301310974 (worked with Leo Li)
Statistics 203
Feb 1st 2017
Stat 203 Assignment 2
8.36
The bias shown is probably from the fact that people are not completely transparent
when answering que
Introduction to Statistics for the Social Sciences
STAT 203

Fall 2015
Samuel Choi 301310974 (worked with Leo Li)
Statistics 203
Feb 1st 2017
Stat 203 Assignment 2
9.38
a) The explanatory variable was what texting method these children used and the
response variable is t
Introduction to Statistics for the Social Sciences
STAT 203

Fall 2015
Samuel Choi 301310974 (worked with Leo Li)
Statistics 203
March 8th 2017
Stat 203 Assignment 4
17.32
A.
H0: = 5.19
HA: 5.19
B.
H0: = 5.19
HA: 5.19
Sample mean = 5.29
Standard deviation = 0.78
SE = 0.7
Introduction to Statistics for the Social Sciences
STAT 203

Fall 2015
Samuel Choi 301310974 (worked with Leo Li)
Statistics 203
March 8th 2017
Stat 203 Assignment 4
14.32
A. It is a binomial distribution as the population is essentially infinite and the tests are
indepe
Introduction to Statistics for the Social Sciences
STAT 203

Fall 2015
STAT203: Introduction to Statistics for the Social Sciences
SEMESTER:
INSTRUCTOR:
EMAIL:
OFFICE HOURS:
FALL 2017
Scott Pai
[email protected]
Saturdays, 12:30pm to 1:30pm
PREREQUISITES
Recomma
Introduction to Statistics for the Social Sciences
STAT 203

Fall 2015
1 Assignment 1
LZLH CMeaonmL tumbles : bran! name 84 may freeze/r
; whetJrIC/r it Lu 0. Cap, 50mm, Meg94(2)
WMM it is Enegg Star complaint (Yes or /\/0 )
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Introduction to Statistics for the Social Sciences
STAT 203

Fall 2015
Evolu&on by Natural Selec&on
Is this picture correct ?
Vocabulary
Species a group of popula&ons which share similar characteris&cs
and interbreed (successfully, in a natural
Introduction to Statistics for the Social Sciences
STAT 203

Fall 2015
Samuel Choi 301310974 (worked with Leo Li)
Statistics 203
March 8th 2017
Stat 203 Assignment 4
17.41
Yes, the data give good evidence because the standard deviation is 2.5% which the
interval includes
Introduction to Statistics for the Social Sciences
STAT 203

Fall 2015
Samuel Choi 301310974 (worked with Leo Li)
Statistics 203
March 8th 2017
Stat 203 Assignment 4
16.26
A.
B. One Sample ttest
99% confidence interval: 4.570 to 2.605
Sample estimates: mean of x = 3.
Introduction to Statistics for the Social Sciences
STAT 203

Fall 2015
Samuel Choi 301310974 (worked with Leo Li)
Statistics 203
March 8th 2017
Stat 203 Assignment 4
16.27
A.
A stem plot will show no strong nonnormality in the sample, which suggests the
population, is a
Introduction to Statistics for the Social Sciences
STAT 203

Fall 2015
Samuel Choi 301310974 (worked with Leo Li)
Statistics 203
Jan 20th 2017
1.23
a) The individuals described in this data set are Laurie Abrams, Gordon Brown, Maria
Cabrera, and Miranda Ismael who all fi
Introduction to Statistics for the Social Sciences
STAT 203

Fall 2015
Samuel Choi 301310974 (worked with Leo Li)
Statistics 203
Jan 20th 2017
4.27
a) Time is the explanatory variable; the scatter plot graph shows a strong positive linear
association between time and dis
Introduction to Statistics for the Social Sciences
STAT 203

Fall 2015
Statistics 203
Assignment 3
Note: You do not need a title page (waste of paper). However, please make sure that your
assignments are legible (typed or neatly handwritten) and include your name and st
Introduction to Statistics for the Social Sciences
STAT 203

Fall 2015
Statistics 203
Midterm 1
DO NOT TURN THIS PAGE UNTIL YOU ARE TOLD TO DO SO!
Name:
_
Student Number:
_
Signature:
_
Instructions:
1. Do not panic. It rarely helps.
2. Read all questions carefully.
3.
Introduction to Statistics for the Social Sciences
STAT 203

Fall 2015
Statistics 203
Assignment 5
Note: You do not need a title page (waste of paper). However, please make sure that your
assignments are legible (typed or neatly handwritten) and include your name and st
Introduction to Statistics for the Social Sciences
STAT 203

Fall 2015
Statistics 201
Sample Midterm 1
DO NOT TURN THIS PAGE UNTIL YOU ARE TOLD TO DO SO!
Instructions:
1.
2.
3.
4.
5.
Read all questions carefully
You may not share materials during the exam
Show all of you
Introduction to Statistics for the Social Sciences
STAT 203

Fall 2015
Midterm prep guide: Stat 203 Online, June 2013
Example questions:
1. Find the (a) mean and (b) standard deviation of the following data, or explain why you cant:
Key pages: Mean pp 8590, Standard Dev
Introduction to Statistics for the Social Sciences
STAT 203

Fall 2015
Statistics 203
Assignment 1
Note: You do not need a title page (waste of paper). However, please make sure that your
assignments are legible (typed or neatly handwritten) and include your name and st
Introduction to Statistics for the Social Sciences
STAT 203

Fall 2015
Statistics 203
Assignment 2
Note: You do not need a title page (waste of paper). However, please make sure that your
assignments are legible (typed or neatly handwritten) and include your name and st