Assignment 2
IOMS Department
Statistics and Data Analysis
Professor William Greene
Phone:
212.998.0876
Office: KMC
7-90
Home page:
http:/people.stern.nyu.edu/wgreene
Email:
wgreene@stern.nyu.edu
Course web page:
http:/people.stern.nyu.edu/wgreene/Statisti
Exam 1 handout
1. A fast-food restaurant monitors its drive-thru service times electronically to ensurethatits
speed of service is meeting the companys goals. A sample of 28 drive-thru service times
wastaken and the stem-and-leaf display below;
1
6
9
12
1
HW 7
1)
2)
3)
4)
5)
6)
Sincich, Ex. 5.1.
Sincich, Ex. 5.4.
Sincich, Ex. 5.9.
Sincich, Ex. 5.25.
Sincich, Ex. 5.31.
Sincich, Ex. 5.56
7) Recall the data set NormTemp.MTP, which you studied in Homework 2. This
gives data on body temperatures for 130 randoml
HW 6
1)
2)
3)
4)
5)
6)
Sincich, Ex. 4.124
Sincich, Ex. 4.128
Sincich, Ex. 4.156.
Sincich, Ex. 4.166.
Sincich, Ex. 4.172.
Sincich, Ex. 4.180.
7) According to a recent survey, 30% of credit card holders pay off their
balances in full each month. If a random
Handout assignment II
1. The marketing manager of a large supermarket chain would like to develop a model for
predicting weekly sales of pet food based on the shelf space. A random sample of 9 stores
is selected, with the following result:
Shelf Space | S
Handout assignment III
1. A bank that offers charge cards to customers studies the yearly purchase amount (in thousands
of dollars) on the card as related to the age, income (in thousands of dollars), whether the and
years of education of the cardholder.
Handout assignment I Answers
1. The marketing manager of a large supermarket chain would like to develop a model for
predicting weekly sales of pet food based on the shelf space. A random sample of 9 stores
is selected, with the following result:
Shelf Sp
ExamplePlus 1.1
If possible, find an Euler circuit.
Solution
Step 1: Determine if the graph is connected.
In order to determine if a graph is connected, you must check that for every pair of its
vertices, there is at least one path connecting the two vert
HW 4
1) Sincich, Ex. 4.16.
2) Sincich, Ex. 4.28
3) Sincich, Ex. 4.32.
4) Sincich, Ex. 4.44.
5) If Var(X) = 25, Var(Y) = 16, and the correlation between X and Y is -.5, Find
a) Cov(X, Y)
b) Cov(2X, 3Y)
c) Var(X+Y)
d) Var (2X + 3Y)
6) A multiple-choice quiz
ExamplePlus 1.2
Eulerize the following graph.
Solution
Step 1: Locate the vertices with odd valence.
Vertices B, C, E, H, J, and K have odd valence because each of these vertices have an odd
number of edges meeting at the vertex.
Step 2: Add edges to the
ExamplePlus 2.1
Apply the Nearest-Neighbor method to find a Hamiltonian circuit, starting at vertex A,
and the weight of the resulting Hamiltonian circuit for the complete weighted graph.
Solution
Step 1: From the starting vertex, choose the edge with the
ExamplePlus 2.2: (correlates to Example 5)
Apply the Sorted-Edges algorithm to find a Hamiltonian circuit for the complete
weighted graph.
Step 1: Arrange the weights of the edges in order from smallest to largest.
The weights, in order from smallest to l
Handout assignment I
Due date:
1. A manufacturing company is interested in predicting the number of defects that will be produced each
hour on the assembly line. The managers believe that there is a relationship between the defect rate and
the production
Basic Statistics I
Professor Hassad
Week of 12/1/14
Monday 12/1 Notes
- Logic of Linear Regressions
- model
- equation
- formula
y = bx + a
y = what you are predicting (dependent)
x = predator (independent variable)
b = regression slope/gradient
a = y-int
IOMS Department
Statistics and Data Analysis
Professor William Greene
Phone: 212.998.0876
Office: KMC 7-78
Home page: www.stern.nyu.edu/~wgreene
Email: wgreene@stern.nyu.edu
Course web page: www.stern.nyu.edu/~wgreene/Statistics/Outline.htm
Assignment 5
M
Assignment 1
IOMS Department
Statistics and Data Analysis
Professor William Greene
Phone:
212.998.0876
Office:
KMC 7-90
Home page:
http:/people.stern.nyu.edu/wgreene
Email:
wgreene@stern.nyu.edu
Course web page:
http:/people.stern.nyu.edu/wgreene/Statisti
IOMS Department
Statistics and Data Analysis
Professor William Greene
Phone: 212.998.0876
Office: KMC 7-78
Home page: www.stern.nyu.edu/~wgreene
Email: wgreene@stern.nyu.edu
Course web page: www.stern.nyu.edu/~wgreene/Statistics/Outline.htm
Assignment 4
L
Handout 2
1. The Sergio Lumber Company manufacturers plywood. One step in the process is when the
veneer is dried by passing through a huge dryer (similar to an oven) where much of the
moisture in the veneer is extracted. At the end of this step, samples
Exam 1
1. A fast-food restaurant monitors its drive-thru service times electronically to ensurethatits
speed of service is meeting the companys goals. A sample of 28 drive-thru service times
wastaken and the stem-and-leaf display below;
1
6
9
12
14
14
11
Chapter 2
Learning Objectives
1. Describe data using graphs
2. Describe data using numerical measures
1
Data Presentation
Data
Presentation
Qualitative
Data
Quantitative
Data
Dot
Plot
Summary
Table
Bar
Graph
Pie
Chart
Pareto
Diagram
Stem-&-Leaf
Display
Fr
STATISTICS AND DATA ANALYSIS
EXERCISE 2, SOLUTION
Peter Lakner
(a) (12 6.80 + 3 8.80)/15 = 7.2
(b) 10 6.2 + 14 8)/24 = 7.25
(c) High-school graduates are more likely to be in the packing division, whereas those who
are not high-school graduates are more l
ExamplePlus 2.3
Seven buildings in an industrial park are connected by sidewalks, shown in the figure.
The vertices represent the buildings, the edges represent the sidewalks, and the lengths
between the buildings are the weights. When snow falls, the ind