The number of users of a certain website (in millions) from 2004 through 2011 follows.YearMillions of Users20042005200620072008200920102011900800700600-500-400Period Users (Millions)300200100-12345(a) Construct a time series plot.67824151159145361608846Period810Millions of UsersWhat type of pattern exists?O The time series plot exhibits a downward curvilinear trend.O The time series plot exhibits an upward linear trend.O The time series plot exhibits a downward linear trend.O The time series plot exhibits an upward curvilinear trend.900800700600500400300200100-024Period.6810Millions of Users900800700600500400300200100+0-024Period6(b) Using Minitab or Excel, develop a quadratic trend equation that can be used to forecast users (in millions). (Round your numerical values to one decimal place.)T₁ =810Millions of Users900800-700-600-500-400-300-200-100-0024Period6810Ⓡ

The question is about time series plot Given :

Answered: The number of users of a certain…

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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3:18 K The accompanying data represent the percentage of recent high school graduates (graduated within 12 months before the given year-end) who enrolled in college in the fall. Construct a time-series plot and comment on any trends. Click the icon to view the data table. Year 1989 Choose the correct time-series plot below. O A. 1990 1991 1992 1993 1994 1995 1996 1997 Percent Enrolled College Enrollment 70+ 64- 58++ 1989 1997 2005 Year College Enrollment Percent Enrolled 59.6 60.1 62.3 61.7 62.4 61.7 61.7 65.5 67.5 Q ||| = OB. Print Percent Enrolled Comment on any trends. Choose the correct comment below. Year 1998 1999 2000 2001 2002 2003 2004 2005 College Enrollment 70- 64- 58 1989 (...) 1997 2005 Year A. The percentage of high school graduates who enrolled in college has generally decreased, though there have been some up years. B. The percentage of high school graduates who enrolled in college has generally increased, though there have been some down years. OC. There are not any…
Questions 2-5. Consider the data in the table. Time Value Absolute Change Relative Change Percent Increase |0 13.60 XX XX XX 1 14.85 2 16.10 3 17.35 |4 18.60 19.85 Complete the table by computing the absolute and relative change.
Centerville Bikes and Stuff (CBS) sells motorcycles and accessories. The number of helmets sold by CBS per week for the past six weeks follows. Week 1 2 3 4 5 6 Value 17 12 14 10 16 13 (a) Construct a time series plot. A graph has a horizontal axis labeled "Week" with values from 0 to 7 and a vertical axis labeled "Time Series Value" with values from 0 to 20. The time series plot contains a series of 6 points connected by line segments. The segments and the approximate points they connect are as follows. The segments start at (1, 17), go down and right to (2, 12), go up and right to (3, 14), go down and right to (4, 10), go up and right to (5, 16), and go down and right to stop at (6, 13). A graph has a horizontal axis labeled "Week" with values from 0 to 7 and a vertical axis labeled "Time Series Value" with values from 0 to 20. The time series plot contains a series of 6 points connected by line segments. The segments and the approximate points they connect…
number 28 The following data shows the price of a certain stock over the last 8 months. Month Price 1 2.10 2 1.98 3 2.01 4 1.89 5 1.90 6 1.89 7 1.72 8 1.65 (a) Develop a scatter diagram and draw a trend line through the points. A graph has a horizontal axis labeled "Month" with values from 0 to 10 and a vertical axis labeled "Price" with values from 0 to 2.5. The scatter diagram has 8 points. A line goes through the center of the pattern of points. A pattern goes down and right becoming more steep from (1, 1.7) to (8, 1.25). A graph has a horizontal axis labeled "Month" with values from 0 to 10 and a vertical axis labeled "Price" with values from 0 to 2.5. The scatter diagram has 8 points. A line goes through the center of the pattern of points. A pattern goes down and right from (1, 2.1) to (8, 1.65). A graph has a horizontal axis labeled "Month" with values from 0 to 10 and a vertical axis labeled "Price" with values from 0 to 2.5. The scatter…
(d) State the interquartile range for this data and use it in a calculation to determine whether the highest score can be classified as an outlier.
Question 2: Find the trend for the time series using moving average method. Forecast for Year 4 quarter 4 Year Sales (000's) Quarter 1 Quarter 2 Quarter 3 Quarter 4 1 25 42 55 36 16 50 53 40 28 58 69 59 2N 3.
Ages Frequency 42-45 2 46-49 7 50-53 8 54-57 16 58-61 5 62-65 4 66-69 2 identify any possible outliers

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