Stat 412/512
MULTIPLE REGRESSION
Jan 12 2015
Charlotte Wickham
stat512.cwick.co.nz
Case Study 9.1
Effects of light on Meadowfoam
What is the effect of light intensity on the number of
flowers?
What is the effect of the timing of the light on the
number of
Stat 412/512
ANOTHER MULTIPLE
REGRESSION
Jan 14 2015
Charlotte Wickham
stat512.cwick.co.nz
Your turn
Consider the model:
cfw_ flowers | light, early =
0 + 1light + 2early + 3(light early)
What is the mean flowers per plant for units in the
late treatment
Stat 412/512
SERIAL CORRELATION
Feb 23 2015
Charlotte Wickham
stat512.cwick.co.nz
Overview of regression
A model for the mean:
cfw_Y | X1, . Xp = 0 + 1X1 + . + pXp
+ assumptions:
There is a Normally distributed subpopulation at each
combination of explana
Stat 412/512
LINEAR COMBINATIONS AND
PREDICTIONS
Jan 21 2015
Charlotte Wickham
stat512.cwick.co.nz
Two big types of question
Find the effect of .
Find the mean when .
e.g. the x + 1 type
e.g. the x= 0 type
Just applications of those
Find the difference in
Stat 412/512
MULTIVARIATE RESPONSES
Mar 2 2015
Charlotte Wickham
stat512.cwick.co.nz
Your turn
A sampling unit is
An experimental unit is
Multivariate responses
When multiple response measurements are made
on an experimental or sampling unit, the respon
Stat 412/512
VARIABLE SELECTION
Feb 18 2015
Charlotte Wickham
stat512.cwick.co.nz
Announcements
DA #2 released today
Quiz #3, material up to Monday,
postponed until next weekend.
To replicate or not?
If interactions are of interest, then
replicate!
When e
Stat 412/512
2
HOTELLINGS T
Mar 4 2015
Charlotte Wickham
stat512.cwick.co.nz
Lab today
No new material.
Your TA will be there.
Ask questions about:
R
Course content
Quiz questions
Last years final
Big Idea
Hotellings T2 extends the two-sample
t-test t
Stat 412/512
VARIABLE SELECTION
EXAMPLE
Feb 20 2015
Charlotte Wickham
stat512.cwick.co.nz
All subsets
Look at all possible models.
Then judge them on some measure of
fit.
Generally learn the most by looking at
a few good models.
Measures of fit
If the num
Stat 412/512
TRANSFORMING TO REMOVE SERIAL
CORRELATION
Feb 25 2015
Charlotte Wickham
stat512.cwick.co.nz
Reminders
DA #2 due today
Regression in your field due Friday
Quiz #3 this weekend
Last homework released today due, next
Wednesday.
Study, study, stu
_solution-3.R
wickhamc
Thu Jan 29 12:34:52 2015
library(Sleuth3)
library(ggplot2)
Q1
1
# head(ex0923)
qplot(AFQT, Income2005, data=ex0923)
Income and intelligence score appear to be positively related. The spread of Income
appears to increase with increas
Stat 412/512
ANOTHER MULTIVARIATE RESPONSE STUDY
Mar 6 2015
Charlotte Wickham
stat512.cwick.co.nz
case1602:
Oat Bran Study
Fiber might reduce serum cholesterol or
it might be that if you give someone a supplemental food
(i.e. high fiber), they might just
ST 412/512
Homework 2 Solutions
Q1:
1. , + 1 , =
(! + ! + ! ( + 1) (! + ! + ! () = !
Effect of time = !
2. In model 1 we have, the change in mean flowers moving from early to late timing
is: , = 1 , =
1.)
Skewed right
2.)
distribution of commuting times in population
= 29.11
distribution of sample means with n = 2
XBar=37.5
distribution of sample means with n = 15
XBar=32.3
distribution of sample means with n = 30
XBar=29.1
distribution of sample mean
Name:
Racism and Health
Take Home Assignment #7
Points possible: 50
1. Watch the video "Ferguson: A Report from Occupied Territory (Links to an external
site.)". *WARNING: This video covers a very touchy subject charged with a lot of
emotion.
2. As you wa
Weekly
Schedule ST
351 online
Spring 2017
(all times are Pacific time)
Week 0: by April 3rd
Read the following:
Coursesyllabus
OtherinformationpostedintheModuletitled"StartHere"
AnnouncementsmadeonCanvas
Week 1: week of April 3rd
Read the following l
Score received: 100%
Disclaimer: I took great care and effort into writing each and every essay I have ever
submitted for this class. I expect you to do the same. I have uploaded these essays and
will continue to do so for the purposed of providing an exa
SOLUTIONS
STAT 1430 Recitation 6A Simpsons Paradox and Probability Rules
Mike and Tom are on a baseball team. They keep track of their batting statistics
for two seasons. They count the number of times they got a hit, and the number of
times they were at
Mount Hood Community College
MTH 243 Probability and Statistics I
Cassie Williams
Summer 2016
Graded Problem Set 4
Please use a different color, such as blue, in the text of your responses.
1. 1. Womens Heights
Assume that Womens heights are normally dist
Find the indicated confidence interval. Assume the standard error comes from a bootstrap distribution that is approximately normally distributed.
A 95% condence interval for a mean P If the sample has n = 60 with 7 = 63 and 5 = 13 , and the standard error
Mount Hood Community College
MTH 243 Probability and Statistics I
Cassie Williams
Summer 2016
Graded Problem Set 2
Please use a different color, such as blue, in the text of your responses.
Life Expectancy Part 2 Refer to the Data Set All Countries. (Data
Announcements
Turn your clicker to channel 7
Chapter 8-9 online Canvas Quiz due tonight
Chapter 9 written assignment due this week in recitation
Classic Probability Rules
Probability Terminology
Trial - A single attempt at a probability experiment
Exa
Announcements
Turn your clicker to channel 7
Starting Probability today
Chapter 8-9 quiz due Monday
Other types of experimental designs:
Block Design: Matched pairs
A matched-pairs design is a randomized blocked experiment in which
each block consists
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ModelYear MfrName
2017 aston martin
2017 aston martin
2017 aston martin
2017 aston martin
2017 BMW
2017 BMW
2017 BMW
2017 BMW
2017 BMW
2017 BMW
2017 BMW
2017 BMW
2017 BMW
2017 BMW
2017 BMW
2017 BMW
2017 BMW
2017 BM
Data Analysis #3
ST314
Total: 40 points
Due: Monday October 31st, at 11:59pm PST
Material from Week 4 and 5 Course Notes and Chapter 5, 6, 7, and 8 are covered on this
analysis.
R code and Datasets can be found in the Data Analysis #3 Instructions
Please
Data Analysis #1
ST314
Total: 40 points
Due: Monday October 3rd at 11:59pm PST
Please Download, complete and upload as PDF or Word Document in Canvas by the due
date.
No other format will be accepted. Typing or entering answers by hand is accepted as
long