/Statistics 3500: Introduction to Statistics ll
November 2015 Chapter 13 First Name
Exam 3 l or full credit.
This test is worth a totai of 100 points. You have to show your work to receive partta
' ' llars X1),
Problem #1. (64 pts) The sales volume (V) o
(7;.
Statistics 3560: Introduction to Statistics II
Review 3
Problem #1. The percent conversion (Y) in a chemical process is analyzed as a mction of time in hours (X1)
and average fusion temperature in degrees Celsius (X2). Data was collected on 12 units.
Statistics 3500: Introduction to Statistics 11
Chapter 9,11,12,15
Name: Q
Review Final
Problem #l. The effect of developer strength (high or low) and development time (10 minutes or 14 minutes)
on t: densny 0f phOtographic plate lm were being studied. Fou
The Problem of
Multicollinearit
y
in Regression
Introduction
In regression models, a regression
coefficient measure the effect of an
individual predictor on the response
when all the other variables in the
model are held fixed.
Y = 1X1 + 2X2 +.+ LXL +
MULTIPLE
LINEAR
REGRESSION
MULTIPLE REGRESSION
In multiple regression there is one
response and more than one predictor.
Predictors can be continuous or
categorical
Predictors can be main predictors or
controlling variables (covariates,
confounders)
Whene
NON PARAMETRIC TESTS
A random sample of 12 small businesses
were asked What percentage of last
years profit was reinvested?.
Data: 5.1, 6.4, 7.1, 23.6, 4.7, 14.3,
5.9, 5.5, 11.6, 17.5, 8.2, 7.7
A government official claims the real
average is 10%.
How can
Stat 3500
Introduction to Probability and Statistics II
- SECTION 8 -
Spring2016
Instructor:
Isabella Zaniletti, Phd
Office:
209C Middlebush
Office hours:
Tue/Thu 11am 12pm
Phone:
573-882-5517
and by appointment
Statistics for Business and Economics, 12th
Completely randomized designs
A simple design for experiments in which experimental units are
independently, randomly selected
Very simple example: Randomly select units from a population of
interest and conduct a one-sample t test about the mean
Anoth
Design of Experiments
Observational studies vs. Designed experiments
Observational study: Analyst has little or no control over the variables
under study and merely observes their values
E.g. Study relationship between use of supplements and memory by a
Stat 3500 Introduction
and review of key Stat 2500 ideas
Syllabus
The syllabus is in the workbook
Instructor information
Bridget Whitehead
Office: Room 23, Middlebush Hall
Email: [email protected]
Office hours: M 10 12, Tu 12:30 1:30
Course in
Stat 3500 Section 5
Due: April 19
1/4
.
Stat 3500 Section 5 Homework 6
Instruction:
There are 3 problems in this homework.
Please list your name and student number clearly.
In order to receive credit for a problem, your solution must show sufficient d
Stat 3500 Section 5
Due: April 14
1/4
.
Stat 3500 Section 5 Homework 5
Due on April 14
Instruction:
There are 3 problems in this homework.
Please list your name and student number clearly.
In order to receive credit for a problem, your solution must s
Stat 3500 Section 5
1/4
.
Stat 3500 Section 5 Homework 7
Instruction:
There are 3 problems in this homework.
Please list your name and student number clearly.
In order to receive credit for a problem, your solution must show sufficient details so
that
Stat 3500 Section 5 Exam 3
Instructor: Cheng Dong
1/7
.
STAT 3500 Spring 2016 - Section 5
Introduction to Probability and Statistics II
Exam III (100 points)
Instruction:
You have 75 minutes available.
Read through all problems carefully.
You may use
Page 1 of 7
Stat 3500
Name:
KEY
Fall 2013 | Exam 1
Student ID:_
1. (4 pts) Find the critical F value for this ANOVA test for = .05:
Source
Treatment
Error
Total
Critical F-value:
df
2
27
29
SS
33.32
176.57
209.89
MS
16.66
6.54
F
2.548
3.3541
2. (6 pts) Wh
Stat 3500
Homework #2
Name:
KEY
Student ID:_
Due September 19, 2013
1. A randomized block design yielded the ANOVA table below:
Source
df
SS
MS
F
Treatments
4
465.4
116.4
5.4
Blocks
3
297.1
99.0
4.6
Error
12
258.8
21.6
Total
19
1021.3
a. How many blocks a
Stat 3500
Homework #4
Name:
KEY
Student ID:_
Due October 31, 2013
1. A psychiatrist wants to know whether the level of pathology () in psychotic
patients 6 months after treatment can be predicted with reasonable accuracy from
knowledge of pre-treatment sy
Stat 3500
Homework #1
Name:
KEY
Student No.:_
Due 9/5/2013
1. A study investigated whether final exam performance is affected by whether
students take a practice test or attend a review session. Students in the
Introduction to Underwater Basketweaving cla