Statistics S-100
Homework #2
Due: Monday, July 8th
Homework policies: You should give a brief and concise explanation for each question. Just writing
down an answer (e.g., SD = 3) with no explanation is not sufficient.
Homework is due to your TA by the st
STATISTICS S-100 SUMMER 2013
MIDTERM EXAMINATION
PAGE 1 OF 10
Statistics S-100 Summer 2013
Midterm Examination
15 July 2013
Name: _
Section TA/day and time: _
This is an open book, open notes exam. You may refer to your problems sets, any self-written
not
STATISTICS S-100 SUMMER 2012
FINAL EXAMINATION
PAGE 1 OF 18
Statistics S-100 Summer 2012
Final Examination
Tuesday, 7 August 2012
Name: _
Section TA/day and time: _
This is an open book, open notes exam. You may refer to your problems sets, any self-writt
STATISTICS S-100 SUMMER 2013
MIDTERM EXAMINATION SOLUTIONS
PAGE 1 OF 7
Statistics S-100 Summer 2013
Midterm Examination Solutions
15 July 2013
.02
0
.01
Density
.03
.04
1. (20 points total) Daily high temperature in F (variable is called temp) and daily r
STATISTICS S-100 SUMMER 2012
FINAL EXAMINATION SOLUTIONS
PAGE 1 OF 13
Statistics S-100 Summer 2012
Final Examination Solutions
Tuesday, 7 August 2012
1. (28 points total) Multiple Choice: require no justification. Note: these parts are not related.
a) (3
Statistics S-100 - Summer 2013
Homework 2 Solutions
2. Study Design Issues
a) Causality cannot be established because this is an observational study. It may be that men who earn more
money no matter what just tend to get married more often.
b) There was n
Statistics S100
Homework #1
Due: Monday, July 1st
Homework policies: You should give a brief and concise explanation for each question. Just writing down an
answer (e.g., SD = 3) with no explanation is not sufficient.
Homework is due to your TA, head TA V
STAT S-100, 2013
Homework 1 Solutions
Questions 2-4
QUESTION 2
a) Mean = (92+88+77+73+72)/5 = 80.84
Var = [(92-80.84)2+(88-80.84)2+(77-80.84)2+(73-80.84)2+(72-80.84)2]/(5 1) = 82.3
SD = (82.3) = 9.072
b) It does seem that we had unseasonably warm weather,
Statistics S-100
Homework #5
Due: Monday, July 29th
Homework policies: You should give a brief and concise explanation for each question. Just writing down
an answer (e.g., SD = 3) with no explanation is not sufficient.
Homework is due to your TA, dropped
Statistics S-100
Homework #4
Due: Monday, July 22nd
Homework policies: You should give a brief and concise explanation for each question. Just
writing down an answer (e.g., SD = 3) with no explanation is not sufficient.
Homework is due to your TA, dropped
Statistics S-100
Homework #3
Due: Noon, Sunday, July 14th
Homework policies: You should give a brief and concise explanation for each question. Just writing
down an answer (e.g., SD = 3) with no explanation is not sufficient.
Homework is due to your TAs 3
Statistics S-100 - Summer 2013
Homework 3 Solutions
1. Breast Cancer Screening
(a) Let us call the events of having cancer and not having cancer C + and C , respectively, and similarly call
the event of having a positive and negative mammogram T + and T ,