Statistics 252 Midterm Exam Paul Cartledge Fall 2014
Statistics 252 Midterm Exam A
Instructor: Paul Cartledge
Instructions:
7.
8.
9.
10.
11.
12.
Read all the instructions carefully.
This is a closed book exam.
You may use the formula sheets and the tables
University of Alberta
Department of Mathematical and Statistical Sciences
STAT 252 (Section A1)
Midterm Exam: Friday, October 23, 2015, 10:00 10:50 a.m.
Instructor: Greg Wagner
SOLUTIONS
Student Name: _
sh is
ar stu
ed d
vi y re
aC s
o
ou urc
rs e
eH w
er
1.
(a)
Purpose of the study: According to the study design, It is widely believed that the average
survival times of cancer patients might depend on the type and organ of origin of the cancer.
Therefore, I believe we should test whether means are differen
1.
(a)
Study design: Since we just collect the data of FEV measurements for 654 subjects in a certain
clinic, we can say this study is an observational study because we are not assigning treatment to
the subjects.
Casual inferences: Casual inference actua
1.
Description of study: One difference of an observational study and an experimental
study is, for the observational study, it can only claim the association between each
variable. However, for the experimental study, it can claim causation from
variable
1.
(a)
Purpose of the study: By the study design, the purpose of study is to establish an equation to
estimate the percentage of body fat by using the collecting data such as age, weight and so on.
Experimental units: The 252 men volunteers are experiment
1.
(a)
(b)
m n
c
s
2.
c2s 2
n 2
m
(a) The population of interest on this study is all grade 12 mathematics students in this
province.
(b) Population inferences cannot be made because the students were selected from one
particular high school in this provi
SOLUTIONS TO LAB 1 ASSIGNMENT
Question 1
(a)
The contingency table is shown below:
First we examine the distribution of 91 countries across the seven GNP levels. The column totals
show that 63 out of 97 countries (69.23%) have GNP values in the lowest ran
Math 209
Sample Midterm Problems
Multiple Choice Questions.
1. The limit
lim
(x,y)(0,0)
x2 cos(y)
x2 + y 2
equals:
(a) 1;
(b) 0;
1
2;
(c)
(d) 1;
(e) does not exist.
Ans: (e)
2. If z is a function of (x, y) and x3 + y 3 + z 3 + 6xyz 2 = 2, then
(a) 0;
(b)
Stat 151 Practice Final 2
LAST NAME: _
FIRST NAME: _
STUDENT ID: _
Instructions:
1)
2)
3)
4)
5)
6)
Personal items must be placed aside prior to the start of the exam.
All portable electronic devices must be turned off, including cell phones, pagers, etc.
Stat 151 Practice Final 2
LAST NAME: _
FIRST NAME: _
STUDENT ID: _
Instructions:
1)
2)
3)
4)
5)
6)
Personal items must be placed aside prior to the start of the exam.
All portable electronic devices must be turned off, including cell phones, pagers, etc.
Stat 151 Practice Midterm 1
LAST NAME: _
FIRST NAME: _
STUDENT ID: _
STAT 151 SECTION: _
Instructions:
1) Personal items must be placed aside prior to the start of the exam.
2) All portable electronic devices must be turned off, including cell phones, pag
Stat 151 Practice Final Lab Questions
The following two questions refer to the materials that were used in the Lab 3 Instructions,
Inferences for Categorical Data.
We obtained the following 95% confidence interval result from the Titanic data:
1) Assume t
Stat 151 Practice Final Lab Questions
The following two questions refer to the materials that were used in the Lab 3 Instructions,
Inferences for Categorical Data.
We obtained the following 95% confidence interval result from the Titanic data:
1) Assume t
Stat 151 Practice Midterm 1
LAST NAME: _
FIRST NAME: _
STUDENT ID: _
STAT 151 SECTION: _
Instructions:
1) Personal items must be placed aside prior to the start of the exam.
2) All portable electronic devices must be turned off, including cell phones, pag
STAT 151 Practice Midterm 2
LAST NAME: _
FIRST NAME: _
STUDENT ID: _
STAT 151 SECTION: _
Instructions:
1) Personal items must be placed aside prior to the start of the exam.
2) All portable electronic devices must be turned off, including cell phones, pag
STAT 151 Practice Midterm 2
LAST NAME: _
FIRST NAME: _
STUDENT ID: _
STAT 151 SECTION: _
Instructions:
1) Personal items must be placed aside prior to the start of the exam.
2) All portable electronic devices must be turned off, including cell phones, pag
Stat 151 Practice Final 1
LAST NAME: _
FIRST NAME: _
STUDENT ID: _
Instructions:
1)
2)
3)
4)
5)
6)
Personal items must be placed aside prior to the start of the exam.
All portable electronic devices must be turned off, including cell phones, pagers, etc.
Stat 151 Practice Final 1
LAST NAME: _
FIRST NAME: _
STUDENT ID: _
Instructions:
1)
2)
3)
4)
5)
6)
Personal items must be placed aside prior to the start of the exam.
All portable electronic devices must be turned off, including cell phones, pagers, etc.
University of Alberta
Department of Mathematical and Statistical Sciences
STAT 252
PRACTICE FINAL
Instructor: Greg Wagner
SOLUTIONS
Student Name: _
Signature: _
Instructions: (READ ALL INSTRUCTIONS CAREFULLY.)
1. This is a closed book exam.
2. You are per
SECTION 5: MULTIPLE REGRESSION ANALYSIS
5.1 The Multiple Linear Regression Model
Multiple Linear Regression develops a model where there is only one response variable (y), but
more than one explanatory or predictor variables (x1, x2, ., xk)
The general mo
University of Alberta
Department of Mathematical and Statistical Sciences
STAT 252 PRACTICE MIDTERM
Instructor: Greg Wagner
SOLUTIONS
Student Name: _
Signature: _
Instructions: (READ ALL INSTRUCTIONS CAREFULLY.)
1. This is a closed book exam.
2. You are p
STAT 252 2016 FALL FINAL FORMULA SHEET GREG WAGNER
Two Means - Paired Samples, d 1 2 :
Numerical Summaries :
For a random sample, ( y1 ,., yn ), of size n
1 n
y
(
y
y
)
yi
i
n i 1
i 1
2
i 1
Sample Variance : sY
n 1
n 1
Sample Standard Deviation Samp
University of Alberta
Department of Mathematical and Statistical Sciences
STAT 252 (Section B1)
Midterm Exam: Thursday, October 20, 2016, 11:00 am 11:50 a.m.
Instructor: Greg Wagner
SOLUTIONS
Student Name: _
Signature: _
Instructions: (READ ALL INSTRUCTIO
University of Alberta
Department of Mathematical and Statistical Sciences
STAT 252 (Section A1)
Midterm Exam: Friday, October 21, 2016, 10:00 10:50 a.m.
Instructor: Greg Wagner
SOLUTIONS
Student Name: _
Signature: _
Instructions: (READ ALL INSTRUCTIONS CA
SECTION 6: TWO-FACTOR ANOVA
Factorial design involves two or more factors affecting the response variable and each factor has
two or more levels
When there are two factors affecting the response variable, it is known as two-factor ANOVA
Just like one-fact
University of Alberta
Department of Mathematical and Statistical Sciences
STAT 252
EXTRA FINAL REVIEW QUESTIONS
Instructor: Greg Wagner
The questions below are extra parts of questions that are on the Practice Final Exam. These are to help
you get a ready
Statistics 252 Homework # 2 Solutions Fall 2016
STAT 252 Homework 2 (70 Marks) Due Friday, October 14 by 10pm
For questions that state SHOW ALL STEPS, write all the steps of a hypothesis test or confidence interval as
indicated below. For other questions