# Stats Essay example

1809 Words Apr 19th, 2011 8 Pages
BUAD 310 – Spring 2011 - Dr. Arif Ansari

Topics Covered –Simple Regression

Homework # 4 - 100 points (Due date 4/4/2011- Monday)

For Home Work 4, Turn in Part 1 (15 points), Question 1(20 points), Question 2 (20 points), Question 3 45 points).
Part 1

MULTIPLE CHOICE [3 point each]

1. In Least squares regression, the regression line is obtained by minimizing,

a) The total variation in the dependent variable.
b) The sum of squares for error (SSE).
c) The sum of squares for regression (SSR)
d) The sum of squares for total (SST).
e) None of the above

2. In a simple regression analysis involving 25 data points, the standard error of estimate is calculated as S( =
The Durbin-Watson test is used in Regression to test for

a) Normality of Errors
b) Constant standard deviation for Errors
c) Correlation between Response and Errors
d) Straight line type relationship between the Predictors and response
e) None of the above

Word Problems

Question 1 (20 points) – Simple Regression

1. The following pairs of values give X, Narco Medical's advertising expense during a period (in hundreds of dollars), and Y, the amount of the company's sales (in thousands of dollars) for the period:

Advertising , X ( in hundreds of \$): 8 9 7 6 5 1
Sales, Y (in thousands of \$): 15 11 10 11 8 5

| | | | | | |
| |Advertising |Sales | | | |
| |X |Y |X^2 |Y^2 |X*Y |
| |8 |15 |64 |225 |120 |
| |9 |11 |81 |121 |99 |
| |7 |10 |49 |100 |70 |
| |6 |11 |36 |121 |66 |
| |5 |8 |25 |64 |40 |

## Related Documents

• ###### Essay Stats

□ EXERCISE 11 Questions to be Graded 1. What demographic variables were measured at least at the interval level of measurement? Age (yrs), Income (annual)(\$), Length of labor (hrs), Return to work (wks), and Number of hours working per week were measured at least at the interval level of measurement 2. What statistics were used to describe the length of labor in this study? Were these appropriate? Yes, Frequency (30) and mean (14.63) are used to describe the data. 3. What other statistic could…

Words: 1247 - Pages: 5
• ###### Stat 200 Final Exam – Latest Essay

Stat 200 Final Exam – Latest IF You Want To Purcahse A+ Work then Click The Link Below For Instant Down Load http://www.acehomework.net/?download=stat-200-final-exam-latest IF You Face Any Problem Then E Mail Us At JOHNMATE1122@GMAIL.COM STAT 200 FINAL EXAM – Complete Solution 1. True or False. Justify for full credit. (a) The volume of milk in a jug of milk is 128 oz. The value 128 is from a discrete data set. (25 pts) • (b) If the variance from a data set is zero, then all the observations…

Words: 1375 - Pages: 6
• ###### Essay Stat Project

Stat 113 Beiyi(Summer) Liu Professor Ihsan Shahwan Final Project Part C In order to figure out how variables relates to each other and the connections among the variables, or one can predict the other. I will choose three quantitative variables or two quantitative variables and one categorical variable on each pairs. I will also use graphs of scatter plots; regression and correlation to understand that how one variable affect other two variables…

Words: 1721 - Pages: 7
• ###### Essay The Constitution Of The United Stats Of America

Since the constitution of the United Stats of America was written in 1787 it has long since been a topic of conversation as well as confrontation among politicians and political theorists alike. The ideals of James Madison and John Dewey regarding constitutional reform and democracy are just another example of this. These two men, both extremely influential in their own way, have conflicting views of liberty, democracy and largely the revision of the constitution and its consequences or lack there…

Words: 1344 - Pages: 6
• ###### Essay Stat 200 Final Exam 100% Correct Answers

STAT 200 Final Exam 100% Correct Answers http://homeworklance.com/downloads/stat-200-final-exam-100-correct-answers/ To Get this Tutorial Copy & Paste above URL Into Your Browser Hit Us Email for Any Inquiry at: Lancehomework@gmail.com Visit our Site for More Tutorials: ( http://homeworklance.com/ ) STAT 200 Final Exam 100% Correct Answers 1. True or False. Justify for full credit. (25 pts) (a) The normal distribution curve is always symmetric to its mean. (b) If the variance…

Words: 21388 - Pages: 86
• ###### stats Essay

INTRODUCTION There are two distinct variables that will be analyzed in this paper. These variables were taken from 20 industries and 140 subindustries in the United States. The first variable to be studied is the Industry group. The industry group variable consists of numbers from 1 to 20 to denote the industry group to which the particular sub industry belongs. The second variable to be studied is the Number of Production Workers. Along with the Number of Production workers, the number of employees…

Words: 586 - Pages: 3
• ###### Stats Essay

Tutorial 1 Hilda Liyana (BA1401) Introduction to Statistics Prepare answers for the following questions to be discussed in class: Distinguish Between a Population and a Sample 1. Write the word or phrase that best completes each statement or answers the question. Identify the population and the sample. a. A survey of 1378 American households found that 27% of the households own a computer. Population – responses of all American households. Sample – responses of 1378 American Households…

Words: 723 - Pages: 3
• ###### Essay about Stat 200 Ol4Us2 Sections Final Exam Fall 2015

STAT 200 OL4US2 Sections Final Exam Fall 2015 Click Link Below To Buy: http://hwcampus.com/shop/stat-200-ol4us2-sections-final-exam-fall-2015/ Or Visit www.hwcampus.com STAT 200: Introduction to Statistics Final Examination, Fall 2015 OL4/US2 Page 1 of 6 STAT 200 OL4/US2 Sections Final Exam Fall 2015 The final exam will be posted at 12:01 am on December 11, and it is due at 11:59 pm on December 13, 2015. Eastern Time is our reference time. This is an open-book exam. You may refer to…

Words: 1943 - Pages: 8
• ###### Stat 200 Final Exam Essay

STAT 200: Introduction to Statistics Final Examination, Fall 2015 OL1/US1 Page 1 of 6 STAT 200 OL1/US1 Sections Final Exam Fall 2015 The final exam will be posted at 12:01 am on October 9, and it is due at 11:59 pm on October 11, 2015. Eastern Time is our reference time. This is an open-book exam. You may refer to your text and other course materials as you work on the exam, and you may use a calculator. You must complete the exam individually. Neither collaboration nor consultation…

Words: 1909 - Pages: 8
• ###### Stat 230 Ol4 Us2 Sections Final Exam Spring 2015 Complete Solution

STAT 230 OL4 US2 SECTIONS FINAL EXAM SPRING 2015 COMPLETE SOLUTION http://www.coursehomework.com/product/stat-230-ol4-us2-sections-final-exam-spring-2015-complete-solution/ Contact us at:  +1 315-750-4434  help@coursehomework.com STAT 230 OL4 US2 SECTIONS FINAL EXAM SPRING 2015 COMPLETE SOLUTION. GET AN A++. STAT 230 OL4 / US2 Sections Final Exam Spring 2015 The final exam will be posted at 12:01 am on May 8, and it is due at 11:59 pm on May 10, 2015. Eastern Time is our reference…

Words: 1926 - Pages: 8