Chapter 5 Discrete Probability Distributions
Learning Objectives 1. 2. 3. 4. 5. 6. Understand the concepts of a random variable and a probability distribution. Be able to distinguish between discrete and continuous random variables. Be able to comput
Regression Using BAII Plus Calculator
Y = a + bX
or
y = b0 + b1X
Assume this is the data set.
X
Y
1
3
2
7
3
5
4
11
5
14
2nd
Data (#7)
X01 = 1
Enter
Y01 = 3
Enter
X02 = 2
Enter
Y02 = 7
Enter
X03 = 3
Enter
Y03 = 5
Enter
X04 = 4
Enter
Y04 = 11
Enter
X05 = 5
Chapter 2 Descriptive Statistics: Tabular and Graphical Methods
Learning Objectives 1. 2. Learn how to construct and interpret summarization procedures for qualitative data such as : frequency and relative frequency distributions, bar graphs and pie
Chapter 1 Data and Statistics
Learning Objectives 1. 2. 3. 4. 5. 6. 7. 8. Obtain an appreciation for the breadth of statistical applications in business and economics. Understand the meaning of the terms elements, variables, and observations as they
Which of the 3 smoothing models should be used and how does one know
which to use other than the fact that the most accurate model must be
selected?
There is no cook-book formula to make that decision.
Remember that software and technology is used to make
Dr. Js note for 6-18-b
The shaded area in the left tail of the curve is the area that answers the question in 6-18-b.
The normal table in your book shows that the area to the left of Z = -1.22 is 0.1112.
So, the answer is that approximately 11.1% of the s
6-20-c
In 5th edition of
Anderson/Sweeney/
Williams
Total is
80%
20%
0.3
0.5
Z axis
0
Z=0.84 (from table)
(see text below)
To answer 6-20-c, we must look in the entries within the table (within the table means the
probability values, not the z vlaues that
Simple Regression: What should you know for test time?
On a test, you should be able to perform manual calculations. But the sample size will be
very small. You must use the formulas to compute:
regression equation, SSR, SSE, SST, r^2, r, standard error,
Use Height of female swimmers to estimate their weight
SSR
SSE
Use Height of female swimmers to estimate their weight
SST
Height Weight
multiply
Col D
Predicted Y
(X)
(Y)
X - Xbar Y - Ybar Col D & E squared (Y^)
(Y^-Ybar)^2
(Y - Y^) squared (Y-Ybar)^2
68
This area is 1 0.1314,
which is 0.8686.
Look it up in body of
table to find the Z.
6-14-d: If the area to the right of Z is 0.1314,
then the area to the left of it is 0.8686 (i.e., 1
0.1314 = 0.8686).
Look up in the body of the table for 0.8686.
Read lef
Problem 6-7 D in 5th edition of Anderson/Sweeney/Williams book.
Students often ask how do the authors know $13000 is the optimum bid?
You could do an analysis such as what follows.
Dr. J.
lower limit upper limit Bid
10000
15000 10100
10200
10300
10400
105
How Confidence Interval for Armand Problem was computed
When you make a prediction of Y with the regression equation, you are really reporting
what the average Y would be for a given value of X.
To be able to use the estimated Y value with any confidence
Here is my explanation for all parts of problem 5-38.
a.
You must use equation 5.11.
The problem says to use mu=3.
So, plug 3 for mu in equation 5.11 to answer part a.
b.
Here: mu=3, x=2. To solve this with your calculator put in the following key-strokes
A multiple regression equation is:
Yhat = -1.2 + 1.3 X1 + 2.9 X2 + 8.8 X3
Where:
X1 is number of employees in thousands
X2 is number of stations in hundreds,
X3 is crude oil inventory in millions of dollars
Yhat estimates revenues in millions of dollars
E
Here is the regression equation for Armand Pizza Parlor:
Y^ = 60 + 5X.
Plug 0 for X.
You would get Y^ = 60. Plot that point (which is the intercept point and goes on the Y axis).
See this point plotted in figure 12.4 (page 473).
Now pick another value for
Forecasting: Some Notes on Time Series
Perhaps one of the most important skills that a manager must be trained to have is
forecasting. This is because forecasting is so pervasive in everyday aspects of any
organization. The daily activities and decisions
1
Alpha value and Single-exponential smoothing
Single exponential smoothing is nothing more than a weighted average. The smoothing constant
acts as the weight and depending on what value you give it (between 0 and 1), you weigh the
time series values diff
Details and Error Analysis Window of DS Software
Every time you run analysis with the forecasting module of the DS software, the second
result window that it generates is the "Details and Error Analysis" window. That window
is generated regardless of what
Question from student in the other section:
Does Excel show the 95% prediction interval somewhere on its' output? Do we have to
calculate it by hand?
Dr. J.'s Response
For Excel to compute the confidence and prediction intervals discussed in chapter 12, w
Checking off the Labels box in Excels Regression Analysis Tool
Students often miss a very important detail in reading the appendix for ch. 12.
Note the steps described in the appendix of chapter 12 for Excel.
In step 5, if you select cells C1 and B1 (whic
Name: Matthew Miners
Part 1 Financial Analysis Case relates to the textbook Module 1 including Appendix 1A and 1B,
and Module 2 including Appendix 2A. Make sure you have read over the instructions document
and reviewed the recommended resources before att
Home Depot, Inc.
Common-Size Balance Sheet
Current Assets:
Cash and Cash Equivalents
Receivables, net
Merchandise Inventories
Other Current Assets
Total Current Assets
Property and Equipment, at cost
Less Accumulated Depreciation and Amortization
Net Prop
Part 3 Financial Analysis Case relates to the textbook Modules 5 and 6.
Instructions: Download the Word Document template I am providing for you to
complete Part 3. Upload your completed Part 3 template by clicking on the Part 3
Financial Analysis Case li
There are many different reasons as to why a company
could or would be failing, but the most common reason is
because of the people in management or in leadership
roles within that company. When it comes to Zynga INC,
they struggled with their management
Matthew Miners
MBA 500
January 26, 2017
What is Human Capital Management
Human capital management is when a company looks at their employees as an asset to
the company. Not as just another person who they are paying to be there every day. Now
human capita
12 WEEK MBA 500 1 Week 8 Assignments
Learning Focus: Strategic Planning
Strategic planning is the process that organizations use to determine where they are going. When
developing a strategic plan, an organization specifies its overall purpose and objecti
When The Boss Doesnt Like Her
Matthew Miners
1/12/2017
MBA 500
When The Boss Doesnt Like Her
Overview
Anna is in a tough situation. As a person of management there is always going to be hard
decisions that a person is going to have to make, whether those