Demand Forecast Error1258 12951267 12751256 12621268 12601277 12641277 12671297 1274-37.00-6.00Absolute SquaredValueError-8.33 8.337.6737.006.007.6713.33 13.3310.00 10.0023.00 23.001369.00 0.029469.4436.0058.78177.78AbsolutePercentError100.000.00660.00480.00600.01040.0078529.00 0.0177 Given the above forecast and demand information in Question 7,what is the value of Theil's U-statistic?1.18O 1.170.0181.08

Consider the given dataset: DemandForecastErrorAbsolute ErrorSquared ErrorAbsolute Percent…

Answered: Given the above forecast and demand…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Based on the data of air pollution in Los Angeles in 2019, the Environmental Protection Agency (EPA) decided to publish a new stricter regulation effective in January 2020 to reduce hydrocarbon pollution. EPA wants to evaluate whether the new regulation makes significant differences in reducing pollution. EPA collects data of monthly hydrocarbon pollution level as follows: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2019 7.3 6.0 5.4 5.9 3.9 5.7 6.9 7.6 6.3 5.8 5.1 5.9 2020 5.3 6.1 5.6 5.7 3.7 4.7 6.1 7.2 6.4 5.7 4.9 5.8
QUESTION 2 An environmentalist wanted to determine if the mean acidity of rain differed among Ipoh, Johor Bahru and Kuantan. He randomly selected six rain dates at each city and obtained the following data: Table 2 Ipoh 5.10 5.00 4.91 5.12 4.78 5.20 Johor Bahru 4.80 4.15 4.42 4.65 4.87 4.10 Kuantan 5.45 6.23 5.55 5.10 5.42 5.25 Answer the following questions without using any output from any software. a) Construct a complete Analysis of Variance table. b) At <= 0.05, test whether the mean acidity of rain is different among the three cities. c) Based on the answer in (a) and (b), write a brief conclusion on the mean acidity of rain among Ipoh, Johor Bahru and Kuantan.
2.1 The Australian Bureau of Statistics (ABS) has recently released a report on the relationship between international students’ ethnicity and enrolments in higher education. Identify the dependent variable(s) and the independent variable (s) in the above scenario.
Refer the given output and answer the following questions; Identify which statistical analyses have been performed? Interpret each of the given Table 1: Statistical Analysis Variables Beta Sig VIF Organizational Culture 0.253 0.000 1.124 Job Stress -0.101 0.078 3.542 Intrinsic Motivation 1.213 0.005 12.389 Dependent variable is employee performance Table 2: Statistical Analysis Composite Reliability AVE Variables Attitude 0.78 0.23 Behaviour 0.52 0.78 Consumption 0.92 0.50 Overall 0.98 0.44
1. The data in Table 7–6 were collected in a clinical trial to evaluate a new compound designed to improve wound healing in trauma patients. The new compound was com- pared against a placebo. After treatment for 5 days with the new compound or placebo, the extent of wound healing was measured. Is there a difference in the extent of wound healing between the treatments? (Hint: Are treatment and the percent wound healing independent?) Run the appropriate test at a 5% level of significance. Use the data in Problem 1. Pool the data across the treatments into one sample of size n = 250. Use the pooled data to test whether the distribution of the percent wound healing is approximately normal. Specifically, use the following distribution 30%, 40%, 20%, and 10% and a = 0.05 to run the appropriate test. Percent Wound Healing Treatment 0-25% 26-50% 51-75% 76-100% New compound (n=125) 15 37 32 41 Placebo (n=125) 36 45 34 10
Iron-deficiency anemia is an important nutritional healthproblem in the United States. A dietary assessment wasperformed on 51 boys 9 to 11 years of age whose familieswere below the poverty level. The mean daily iron intakeamong these boys was found to be 12.50 mg with standarddeviation 4.75 mg. Suppose the mean daily iron intakeamong a large population of 9- to 11-year-old boys fromall income strata is 14.44 mg. We want to test whether themean iron intake among the low-income group is differentfrom that of the general population. Problem a) State the hypotheses that we can use to considerthis question.Problem b) Carry out the hypothesis test in Problem a using the critical-value method with an α level of 0.05, and summarize your findings. Problem c) What is the p-value for the test conducted in Problem b?
Table 1. Critical Values from N(0,1) Distribution One-sided 1.29 1.645 2.33 1. 10% 5% 1% Two-sided 1.645 1.96 2.575 Question 1 Are the following statements true or false? Circle A or B to indicate whether each statement is true or false. Low R² in an estimated regression model indicates that changes in independent variables do not have an important effect on the dependent variable. A. True B. False
2.4

Recommended textbooks for you

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

Elementary Statistics: Picturing the World (7th E…

Statistics

ISBN:

9780134683416

Author:

Ron Larson, Betsy Farber

Publisher:

PEARSON

The Basic Practice of Statistics

Statistics

ISBN:

9781319042578

Author:

David S. Moore, William I. Notz, Michael A. Fligner

Publisher:

W. H. Freeman

Introduction to the Practice of Statistics

Statistics

ISBN:

9781319013387

Author:

David S. Moore, George P. McCabe, Bruce A. Craig

Publisher:

W. H. Freeman

SEE MORE TEXTBOOKS

Given the above forecast and demand information in Question 7, what is the value of Theil's U-statistic?