STATS 60, Spring 2008 April 2, Lecture 02
1
Freedman Chapters 3 & 4
Populations and samples A population is the universe of objects/subjects we are interested in. If we want to know the average age of US males, the population is every living male
Lecture 3.1
0.1. QHW-3 available on Coursework.
0.2. Review and Preview
0.2.1. Statistical inference for
(i) univariate distrns, using 2 with (k-1) df;
(ii) bivariate distrns, using 2 with (r-1)(c-1) df.
0.2.2. Required sample size to reliably detect chan
Psy 10/Stat 60
Ewart Thomas
Lecture 4.1
0. QHW-4 but we still need QHW-3.
1. Review of formal tests
i) test statistic, 2; and recently z, with critical values 2.
ii) level of significance, mostly 0.05, but also .01, .001,
iii) Reject H0 if 2 > c, retain o
Lecture 7.1.
0. QHW-7, etc. on Coursework.
Lecture Outline
0.1. 1- vs 2-tailed tests
0.2. The use of p-values instead of the reject/retain H0
approach
0.3. The size of the Rejection Region, R, is .
0.4. Using Confidence Intervals in inference is
equivalen
Psy 10/ Stat 60
Ewart Thomas
1
Notes on small vs large n, parametric vs non-parametric tests, t vs z tests, etc.
Ewart Thomas (Week 7)
It is helpful to review some of the issues, administrative as well as substantive, that come up
around this time in our
Lecture 5.1.
0. QHW-5 on Coursework. Note that we are still working
our way through QHW-4.
0.1. Decision-making under uncertainty: Often we are
faced with a choice of actions, such that the consequence
of each action is uncertain, and we wish to decide wh
Statistics 60
Introduction to Statistical Methods
Assignment #2
Due Friday April 08, 2011
Prof. J. Taylor
You may discuss homework problems with other students, but
you have to prepare the written assignments yourself. You must
show your work for full cre
Statistics 60
Introduction to Statistical Methods
Practice Quiz #2
Prof. J. Taylor
The quiz will be closed book. You must show your work for
full credit.
You will have to circle your section leader:
Will Fithian (A-F)
Rahul Mazumder (G-L)
Leo Pekelis (
Statistics 60
Introduction to Statistical Methods
Assignment #1
Due Friday April 01, 2011
Prof. J. Taylor
You may discuss homework problems with other students, but
you have to prepare the written assignments yourself. You must
show your work for full cre
Statistics 60
Introduction to Statistical Methods
Practice Quiz #3
Prof. J. Taylor
The quiz will be closed book. You must show your work for
full credit.
You will have to circle your section leader:
Will Fithian (A-F)
Rahul Mazumder (G-L)
Leo Pekelis (
Statistics 60
Introduction to Statistical Methods
Assignment #4
Due Tuesday April 19, 2011
Prof. J. Taylor
You may discuss homework problems with other students, but
you have to prepare the written assignments yourself. You must
show your work for full cr
STATS 60, Spring 2008 April 14, Lecture 08
1
Freedman Chapters 9, 10, 11 & 12
A note on interpolation
When discussing percentiles, we said, for example, that the 0.25(n + 1)th element in an ordered list corresponds to the 1st quartile. What if the
STATS 60, Spring 2008 April 9, Lecture 06
1
Freedman Chapters 7 & 8
Slope and intercept
Soon we will begin our discussion on regression, and in regression we will want to draw a straight line through a group of points. To get ready, let's review t
STATS 60, Spring 2008 April 8, Lecture 05
1
Freedman Chapters 5 & 6
Normal curve The normal curve (normal probability density function, or normal pdf ) can be used to describe the distribution of a wide range of populations and samples, and it pla
STATS 60, Spring 2008 April 3, Lecture 03
1
More on box plots (and histograms)
Example 1
Consider the sample x = -2, -2, -1, -1, 0, 0, 0, 0, 1, 1, 1, 1, 2, which has 13 elements. To create a histogram, stack the observations along the number line.
1
Psych 10/Stat 60
Ewart Thomas
Lecture 2.1
0.1. Week 2 folder now open on Coursework
0.2. Quiz 1 tomorrow 8:50-9:50 in Annenberg and Cemex.
The graded blue-books will be placed in the slots outside Rm
420-040 in the basement of Jordan Hall on Thurs a.m.