i Exercise ll.5_
John Calipari, head basketball coach for the 2012 national champion University of Kentucky Wildcats, is the highest paid coach in college basketball with an annual salary of $5.4 million (USA Today, March 29, 2012). The following sample s
3 Exercise 10.5k
The average expenditure on Valentine's Day was expected to be $100.89 (USA Today, February 13, 2005). Do male and female consumers differ in the amounts they spend? The average expenditure in a sample surveyI
of 40 male consumers was $135
Page 1 of 9
Correlation and Least Square Regression
Goals
1. From the correlation (r), be able to:
a. Interpret the strength of the linear relationship
b. Interpret the direction of the linear relationship
c. Use r2 to evaluate how x can explain the varia
BUAL Chapter 1- Introduction to Data Analysis and Decision Making
The term data analysis has long been synonymous with the term statistics, but in todays world,
with massive amounts of data available in business and many other friends such as health and
s
BUAL Chapter 1 notes
The term data analysis has long been synonymous with the term statistics, but in todays world,
with massive amounts of data available in business and many other fields such as health and
science, data analysis goes beyond the more nar
BUAL Chapter 2- Describing the Distribution of a Single Variable
A population includes all of the entities of interest, whether they be people, households,
machines, or whatever
o All potential voters in a presidential election
o All subscribers to a cabl
BUAL Chapter 3- Finding Relationships among Variables
Crosstabs or contingency tables are how we display counts for multiple variables (Use excel
COUNTIFS)
o Then evaluate this information by using percentages for rows and columns
Comparison problem- when
BUAL Chapter 4- Regression Analysis: Estimating Relationships
Regression analysis is the study of relationships between variables
o One of the most pervasive of all statistical methods in the business world
There are several ways to categorize regression
Page 1 of 3
Describing Distributions with Numbers Measures of Spread
Goals
1. Based on the level of measurement of a variable, know the appropriate measures of spread.
2. For a given variable, be able to calculate and interpret:
a. Range
b. Quartiles (Q1,
BUAL 2310-48 Business Analysis I Fall 2016
Instructor: Dr. Ashraf El-Houbi
Office: Galloway Business, Room 270 Tel: (409) 880-8637
email: [email protected][email protected]
Textbook: Textbook:
Modern Business Statistics with Microsoft, 5th Editio
Describing Distributions with Numbers: Measures of Center
Goals
1. Based on the level of measurement of a variable, know the appropriate measures of center.
2. Be able to calculate and interpret the mean, median, and mode of a variable.
3. Understand whic
Page 1 of 5
Displaying Distributions with Graphs
Goals
1. Be able to create a frequency table from a small data set.
2. Understand what information can be obtained from a frequency table.
3. Understand the purpose of a graph.
4. For the following graphs:
BUAL 3310 Review sheet for Exam 1
Exam 1: Test will include Chapter 1, Chapter 2, and Chapter 3 and 4.1-4.4
Q1) In the following multiple choice questions, circle the letter in front of the correct
answer
1. The population variance is represented by the s
Formula Sheet BUAL 3310 Exam 1
Width of Interval = (Max-Min)/# of classes
Median= (n+1)/2 ranked value
Variance:
2
=
s 2 ( xi x ) 2
n 1
( xi ) 2
N
Z-score:
x
x x
Z
s
Z
CV= ( S/ )100%
x
Chebyshev Rule
Correlation:
r
(1-
1
K2
)100%
cov( x, y )
SxS y
Probab
BUAL 3320-048 Business Analysis II Spring 2016
Instructor: Dr. Ricardo Tovar-Silos
Personal Introduction
Welcome to Lamar University. My name is Ricardo Tovar-Silos and I am an Assistant
Professor at the Department of Information Systems and Analysis at t
510 Chapter 12 Tests oi Goodness oi Pi! and Independence
Host B
Host A Con Mixed Pro
Con 24 8 l3
Mixed 8 l3 1 1
Pro [0 9 64
Use the chi-square test ofindependence with 21.0} level of signiﬁcance to analyze the dam
What is your conclusion?
12.3 Goodness of
Notes on Hypothesis testing when the standard deviation of the population 0 is unknown.
If the standard deviation of the population 0 is unknown, we need to replace it with its point estimator
which is the standard deviation of the sample 5.
The test stat
l.
4.
Review Final Exam BUAL 3320
THE NEXT SIX UESTION S ARE BASED ON THE FOLLOWING INFORMATION:
A real estate appraiser is interested in determining the factors that determine the price of a house.
She wants to run the following regression:Y = 60 + )3le
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(First Page)
Name: Class: Date:
(Subsequent Pages)
I .
I Exercise "Lﬁ }
The average expenditure on Valentine's Day was expected lo be 33 [00.89 (USA ibdrrv. Februar}r I3, 2006
Quick View httpm’sjc.instructorxengagenoweomfian'bcafinstrftest-printing/7502.
Name: Class:_ Date:
(First Page)
Name: Class:_ Date:
(Subsequent Pages)
1 O
Self-Test Tutorial
Exerei l l
A market research ﬁrm used a sample of individuals to rate the
Review Chapter 13
1. Allied Corporation wants to increase the productivity of its line workers. Four different programs have
been suggested to help increase productivity. Twenty employees, making up a sample, have been
randomly assigned to one of the four
LA sample of 20 cans oftoniatoju ice showed a standard deviation of 0.4 ounces. A 95% conﬁdence interval
estimate ol'the variance For the population is
a. 0.2313 to 0.8533
b. 0.2224 to 0.7924
c. 0.0889 to 0.3 I 69
0.0925 to 0.34 I 3
l\‘ 10) S; Cl’
ICt