STAT 460
Quiz 1
Fri, 9/17/2004 Score:_
NAME: _
1) Which one of the following statements is true? a) X and s are parameters; and are statistics b) and s are parameters; X and are statistics c) X and ar
STAT 460
Lab 11 Solutions
11/29/2004
Task 1: Challenger O-ring example
a. Cross-tabulation shows failure rates of 0, 16.7, 60.0, 0 and 75% as we drop temperature
groups from the 80s to the 50s. The ri
STAT 460
Quiz 2
Fri, 10/08/2004 Score:_
NAME: _
1. In general, statistical inference can be said to consist of a. making conclusions about unknown population parameters based on observed sample statis
STAT 460
One way ANOVA example
Researchers at Purdue University conducted an experiment to compare three methods of teaching reading. Students were randomly assigned to one of the three teaching metho
Introduction to Experimental Design
p. 1 John Dziak
Introduction to Experimental Design In an experiment, objects are assigned to different groups which then are given different treatments. The groups
Evaluating Polygraph Data
Aleksandra Slavkovic
[email protected]
Abstract
The objective of automated scoring algorithms for polygraph data is to create reliable and statistically valid classication sc
STAT460
Lab 1 Solutions
9/13/2004
Task 2: Independent sample t-test a. The "model" is a statement of our assumptions about the populations from which our data come. Here the model is that the two samp
Assignment 4
1. The graph shows a pattern of unequal variances.
2.
Analysis of Variance for EggsLaid
Source
DF
SS
MS
MothType
2
599467
299733
Error
42
1806295
43007
Total
44
2405762
F
6.97
P
0.002
Con
Stat 460
Homework 7 Key
1. This problem uses the data from exercise 8-2 of the book.
A. Do an appropriate two factor analysis of variance. Are there significant treatment
differences?
Is the block eff
Stat 460 Homework 3 Key
The times, in seconds, to a complete a task are recorded for 24 individuals. The data
were collected in a completely randomized experiment done to examine how the time
is affec
Solution for Practice Question Of 2/6/98 Handout
The Question
An experiment is done to examine how the night time legibility of highway signs is
affect by increasing the brightness of the sign board m
SAS OUTPUT lab5
The REG Procedure
Model: MODEL1
Dependent Variable: TCELL
Analysis of Variance
Source
DF
Sum of
Squares
Mean
Square
Model
Error
Corrected Total
1
19
20
0.06244
0.12472
0.18716
0.06244
Daniel Chen Long Liu
Question #1:
a. Regression Analysis: Time versus Type
Method
Categorical predictor coding
(1, 0)
Analysis of Variance
Source
Regression
Type
Error
Total
DF
1
1
38
39
Adj SS
65.03