The following time series shows the number of junk email messages that Ashar Nazir has received in each of the most recent seven months.OtTime Series Value1(a) Construct a time series plot.140120100-806040200-Yt 122 111 1020213245 6 797 933 4 5Time Period (t)92 9067What type of pattern exists in the data?O The time series plot shows a linear trend.O The time series plot shows a seasonal pattern.O The time series plot shows a horizontal pattern.O The time series plot shows a nonlinear trend.8Time Series Value14012010080604020-001(c) What is the forecast for t = 8? (Round your answer to one decimal place.)23 4 5 6Time Period (t)78OTime Series Value140-120100-8060402000123 4 5Time Period (t)6(b) Use simple linear regression analysis to find the parameters for the line that minimizes MSE for this time series. (Round your numerical values to two decimal places.)Yt=78140-12010080t60-40200Time Series Value0123 4 5Time Period (t)678i

The regression equation is used to predict the variable based on the another. It has two regressor…

Answered: The following time series shows the…

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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A financial analyst is examining the relationship between stock prices and earnings per share. She chooses fifteen 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 fifteen stocks. (These products, written in the column labelled "xy ", may aid in calculations.) Earnings per Current stock price, y (in dollars) share, x (in dollars) xy 37.59 1.19 44.7321 y 56.02 2.70 151.254 20.21 0.75 15.1575 X 41.33 0.91 37.6103 19.90 0.63 12.537 58.72 2.37 139.1664 43.33 1.45 62.8285 42.61 1.77 75.4197 13.72 0.52 7.1344 37.29 1.39 51.8331 30 30.12 0.93 28.0116 49.34 1.59 78.4506 Earnings per share (in…
A financial analyst is examining the relationship between stock prices and earnings per share. She chooses fifteen 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 past12 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 fifteen stocks. (These products, written in the column labelled " xy Earnings per share, x (in dollars) Current stock price, y (in dollars) xy 49.65 1.53 75.9645 27.34 1.09 29.8006 36.07 1.47 53.0229 21.11 0.70 14.777 58.19 2.32 135.0008 58.32 2.86 166.7952 43.48 1.08 46.9584 18.20 0.85 15.47 41.85 1.68 70.308 32.39 1.68 54.4152 30.67 1.34 41.0978 42.03 1.54 64.7262 15.56 0.54 8.4024…

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