# Analysis of Website User Growth from 2004 to 2011The data presented in the table below shows the number of users (in millions) of a certain website over a span of eight years, from 2004 through 2011.| Year | Period | Users (Millions) ||------|--------|------------------|| 2004 | 1 | 1 || 2005 | 2 | 6 || 2006 | 3 | 11 || 2007 | 4 | 59 || 2008 | 5 | 146 || 2009 | 6 | 359 || 2010 | 7 | 608 || 2011 | 8 | 845 |### (a) Construct a Time Series PlotThe diagrams provided below illustrate different types of time series plots that represent user growth over the periods.1. **Graph 1**: Depicts a downward linear trend.2. **Graph 2**: Shows an upward linear trend.3. **Graph 3**: Indicates a downward curvilinear trend.4. **Graph 4**: Displays an upward curvilinear trend.The accurate representation of the data should match the significant increase in users over time.### Identifying Patterns**Question:** What type of pattern exists?- The time series plot exhibits a downward curvilinear trend.- The time series plot exhibits an upward linear trend.- The time series plot exhibits a downward linear trend.- The time series plot exhibits an upward curvilinear trend.The correct pattern based on the data provided is an upward curvilinear trend.### (b) Forecasting UsersUsing Minitab or Excel, develop a quadratic trend equation to forecast users (in millions). Round numerical values to one decimal place.\[ T_t = \]Enter the derived quadratic equation here. This equation will help predict future user numbers based upon the historical data trends observed.

Excel Procedure: Enter period and users in Excel sheet>Select period and users>Insert…

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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Please answer 2, 4, 5 and 6
Part G H I
Data shows the temperature for the months of Novemember 2020 and November 2021. Date 2020 2021 1-Nov 55 61 2-Nov 47 52 3-Nov 57 55 4-Nov 67 53 5-Nov 70 55 6-Nov 73 55 7-Nov 77 56 8-Nov 80 68 9-Nov 79 72 10-Nov 76 67 11-Nov 72 67 12-Nov 60 65 13-Nov 54 64 14-Nov 54 47 15-Nov 66 50 16-Nov 54 50 17-Nov 49 61 18-Nov 38 72 19-Nov 50 50 20-Nov 65 49 21-Nov 66 56 22-Nov 60 50 23-Nov 55 45 24-Nov 50 46 25-Nov 61 59 26-Nov 68 48 27-Nov 62 43 28-Nov 57 43 29-Nov 59 44 30-Nov 67 41 Find the variance and standard deviation for each group.
An annual marathon covers a route that has a distance of approximately 26 miles. Winning times for this marathon are all over 2 hours. The following data are the minutes over 2 hours for the winning male runners over two periods of 20 years each. Earlier Period 6 22 23 14 15 20 15 18 7 18 15 10 10 14 16 12 23 13 16 16 Recent Period 8 8 7 9 9 10 8 14 8 11 14 7 9 9 10 7 7 8 9 9 (a) Make a stem-and-leaf display for the minutes over 2 hours of the winning times for the earlier period. Use two lines per stem. (Use the tens digit as the stem and the ones digit as the leaf. Enter NONE in any unused answer blanks Minutes Beyond 2 Hours Earlier Period 0 NONE 0 6,7 1 ? 1 ? 2 0,2,3,3 2 NONE (b) Make a stem-and-leaf display for the minutes over 2 hours of the winning times for the recent period. Use two lines per stem. (Use the tens digit as the stem and the ones digit as the leaf. Enter NONE in any unused answer blanks.) Minutes Beyond 2 HoursRecent Period…
What is the answer to this question? Find the y-intercept, find the known year data find if it’s first or last , and then find the year acts.
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…
Data shows the temperature for the months of Novemember 2020 and November 2021. Date 2020 2021 1-Nov 55 61 2-Nov 47 52 3-Nov 57 55 4-Nov 67 53 5-Nov 70 55 6-Nov 73 55 7-Nov 77 56 8-Nov 80 68 9-Nov 79 72 10-Nov 76 67 11-Nov 72 67 12-Nov 60 65 13-Nov 54 64 14-Nov 54 47 15-Nov 66 50 16-Nov 54 50 17-Nov 49 61 18-Nov 38 72 19-Nov 50 50 20-Nov 65 49 21-Nov 66 56 22-Nov 60 50 23-Nov 55 45 24-Nov 50 46 25-Nov 61 59 26-Nov 68 48 27-Nov 62 43 28-Nov 57 43 29-Nov 59 44 30-Nov 67 41 Find the mean, median, mode and range for each group.
Q1/ A// Determine the relative cumulative frequency for the data below. Class 0-10 10-20 20-30 30-40 40-50 50-60 60-70 interval Frequency | 95 B// Draw the polygon curve for the data above. 30 60 40 20 10
A financial analyst is examining the relationship between stock prices and earnings per share. She chooses sixteen publicly traded companies at random and records for each the company's current stock price and the company's earnings per share reported for the past 12 months. Her data are given below, with x denoting the earnings per share from the previous year and y denoting the current stock price (both in dollars). A scatter plot of her data is shown in Figure 1. Also given is the product of the earnings per share and the current stock price for each of the sixteen stocks. (These products, written in the column labelled "xy ", may aid in calculations.) Earnings per share, x (in dollars) 36.79 49.84 30.65 30.17 17.66 57.66 37.98 20.65 58.67 13.52 41.83 39.28 43.73 Current stock price, y (in dollars) 1.43 1.56 0.81 1.40 0.77 2.64 1.11 0.70 2.18 0.41 1.80 1.05 1.63 ху 52.6097 77.7504 24.8265 42.238 13.5982 152.2224 42.1578 14.455 127.9006 5.5432 75.294 41.244 71.2799 Current stock…
Activity 3 A property developer analyzed the amount of office space available in 40 office blocks in the CBD of Gobabis. The following floor areas were recorded. 175 150 178 144 182 172 126 143 146 116 182 140 162 155 176 140 165 165 142 165 168 120 160 155 170 162 177 164 158 118 135 162 195 124 135 150 178 190 160 185 Is the data Continuous or discrete Quantitative or qualitative. Nominal, ordinal, ratio or interval scaled? Determine the range of the data. Use Sturges Rule to determine k, the number of classes, also determine the class width and the appropriate class limits. Construct a frequency distribution for the data. Construct a histogram for the data. Interpret your histogram. Construct a frequency polygon and interpret it. Construct a less than ogive for the data. Construct a more than ogive for the data. From your graph what percentage of office blocks has available…
A total of 100 members of a hiking club are periodically evaluated for Lyme disease to comply with their club charter. The graph shown depicts the onset of Lyme disease among the members between 1997 and 1999. Which of the following is the incidence of Lyme disease within this population in 1998? Prior to 000 1997 O a. 2/95 b. 2/100 c. 5/95 d. 5/100 e. 7/95 f. 7/100 1998 O O

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