Taking the deviations of the time variable compute the trend values for thefollowing data by the method of least square :136.7Days :Sales (in Rs.) :4520304020506080

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Answered: Taking the deviations of the time…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Which of the following is not a good interpretation of a seasonal index of 1.26 for fall quarter sales? O a. Fall quarter sales are 26 perbent higher than the annual average. O b. Fall quarter sales represents 1.26 times the annual average. O c. Fall quarter sales represents an increase of 26 percent over last year's annual average. O d. Fall quarter sales average 126 percent of annual sales.
Calculate the average (mean) of the data shown, to two decimal places X 16.6 25 28.3 7.2 23.2 8.5 29.6 26.4
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Let x be the average number of employees in a group health insurance plan, and let y be the average administrative cost as a percentage of claims. x 3 7 15 32 75 y 40 35 30 26 18 (a) Make a scatter diagram of the data and visualize the line you think best fits the data. Flash Player version 10 or higher is required for this question. You can get Flash Player free from Adobe's website. (b) Would you say the correlation is low, moderate, or strong? positive or negative? strong and negative moderate and negative strong and positive low and negative low and positive moderate and positive (c) Use a calculator to verify that Σx = 132, Σx2 = 6932, Σy = 149, Σy2 = 4725, and Σxy = 2997. Compute r. (Round your answer to three decimal places.)r = As x increases, does the value of r imply that y should tend to increase or decrease? Explain. Given our value of r, we cannot draw any conclusions for the behavior of y as x increases. Given our value of r, y should tend to…
Please help me to find the trend values by using the moving average method (Correct to three decimal places
Q. 16. step by stepsolutiomn please Scatter plots and Equations of Lines, Writing an Equation for a trend line Which graph shows the best trend line for the following data Practice (weeks) 6 8 10 12 14 16 18 Score 15.5 21.5 26.5 34 33 37 41
12. Fit a straight line trend by the method of least squares to the following data. Assuming that the same rate of change continues, what would be the predicted earming for the year 2015? Year 2001 2002 2003 2004 2005 2006 2007 2008 Eamings (Rs. lakh): Do not plot the trend values on the graph. 38 40 65 72 69 60 87 95
The scatter plot shows the relationship between the average number of times, t, a person goes to a movie theater per month and the person's age in years, a, for 9 people. A trend line that passes through the point (5, 20) is also shown. Age 90 80 70 60 50 40 30 20 10 Going to the Movie Theater 0 1 2 3 4 5 6 7 8 Movie Theater Visits per Month What is the equation for the trend line?
Statistical forecasting

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Taking the deviations of the time variable compute the trend values for the following data by the method of least square : 1 2 6. Days : Sales (in Rs.) : 3 4 5 7 20 30 40 20 50 60 80