Stat 5201, April 14, 2010
Name
This test is closed book but you may use both sides of one 8 by 11 formula sheet. You may not
use a calculator. It is enough to express any numerical answer as a formula
Stat 5201, April 4, 2008
Name
Twenty-six people took the exam. The average score was 61.0 and the standard deviation of
the scores was 18.3. The range went from 32 to 98.
1. A department store is inte
Base R
Cheat Sheet
Getting Help
Accessing the help files
?mean
Get help of a particular function.
help.search(weighted mean)
Search the help files for a word or phrase.
help(package = dplyr)
Find help
FINAL EXAM
STAT 5201
Spring 2010
Due in Room 313 Ford Hall
Friday May 14 at 3:45 PM
Please deliver to the oce sta
of the School of Statistics
READ BEFORE STARTING
You must work alone and may discuss t
FINAL EXAM
STAT 5201
Spring 2013
Due in Room 313 Ford Hall
on Friday May 17 at 3:45 PM
Please deliver to the oce sta
of the School of Statistics
READ BEFORE STARTING
You must work alone and may discus
Stat 5201, April 12, 2013
Name
This test is closed book but you may use both sides of one 8 by 11 formula sheet. You may not
use a calculator. It is enough to express any numerical answer as a formula
Least squares
Four preliminary facts:
n
i=1 (ui
1. If u = (u1 , . . . , un ) is a vector of real numbers then
n
i=1 (ui
2. The function h(x) =
u) = 0.
x)2 is minimized at x = u.
3. The function f (x
Stats 5201 Lecture Notes
Calculating estimates for stratified random samples
Here is some R code that finds the stratified estimator of the population mean under simple
random sampling and an estimate
Stats 5201 Lecture notes
Sample Survey
From one point of view sample survey is the fundamental problem of statistics.
Sample survey is unusual because it introduces unnecessary randomization into a pr
STAT 5201 HW6
6-1.
Edition 2: Chapter6-Problem 4 (Edition 1: Chapter6-Problem 6)
Note: The handout Studying the Horvitz-Thompson Estimator will help you
do the following problem.
6-2. Consider a popul
FINAL EXAM
STAT 5201
Spring 2012
Due in Room 313 Ford Hall
Either Wednesday May 9 or Friday May 11 at 3:45 PM
Please deliver to the oce sta
of the School of Statistics
READ BEFORE STARTING
You must wo
Stat 5201, April 6, 2012
Name
This test is closed book but you may use both sides of one 8 by 11 formula sheet. You may not use a
calculator. It is enough to express any numerical answer as a formula
FINAL EXAM
STAT 5201
Spring 2011
Due in Room 313 Ford Hall
Friday May 13 at 3:45 PM
Please deliver to the oce sta
of the School of Statistics
READ BEFORE STARTING
You must work alone and may discuss t
Stat 5201, April 15, 2011
Name
This test is closed book but you may use both sides of one 8 by 11 formula sheet. You may not
use a calculator. It is enough to express any numerical answer as a formula