3. a. What is the difference between time series and cross section data?3.b. What are the components of a time series? Explain with example.3.c. The following table gives hourly wages for three types of workers. Compute the Laspeyre's priceindex for hourly wages. In 2021-1, 450 Raj-Mistry, 500 brick layer, and 600 jogali were employed in theconstruction sector.Interpret your result.QuarterRaj-MistryBrick layerJogali2021-1150125502021-|175130602021-I||180140652021 -IV170135652022 -I160130602022-|16514068

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Answered: 3. a. What is the difference between…

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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canton Supplies, inc., is a service firm that employs approximately 100 individuals.Managers of canton Supplies are concerned about meeting monthly cash obligations andwant to develop a forecast of monthly cash requirements. Because of a recent changein operating policy, only the past seven months of data that follow are considered to berelevant.Month 1 2 3 4 5 6 7Cash Required ($1000s) 205 212 218 224 230 240 246a. construct a time series plot. What type of pattern exists in the data?b. Using Minitab or excel, develop a linear trend equation to forecast cash requirementsfor each of the next two months.
A Bloomberg Businessweek North American subscriber study collected data from a sample of 2861 sub-scribers. Fifty- nine percent of the respondents indicated an annual income of $ 75,000 or more, and 50% reported having an American Express credit card. a. What is the population of interest in this study? b. Is annual income a categorical or quantitative variable? c. Is ownership of an American Express card a categorical or quantitative variable? d. Does this study involve cross- sectional or time series data? e. Describe any statistical inferences Bloomberg Businessweek might make on the basis of the survey.
1- The science of collecting, organizing, presenting, analyzing, and interpreting data is called ___________. a. None b. Regression c. Time series d. Statistics
corporate triple-a bond interest rates for 12 consecutive months follow.9.5 9.3 9.4 9.6 9.8 9.7 9.8 10.5 9.9 9.7 9.6 9.6a. construct a time series plot. What type of pattern exists in the data?
4. The CDC released the following table of life expectancies for Americans from 1900-2010.
A Bloomberg Businessweek North American subscriber study collected data from asample of 2861 subscribers. Fifty-nine percent of the respondents indicated an annualincome of $75,000 or more, and 50% reported having an American Express credit card.a. What is the population of interest in this study?b. Is annual income a categorical or quantitative variable?c. Is ownership of an American Express card a categorical or quantitative variable?d. Does this study involve cross-sectional or time series data?e. Describe any statistical inferences Bloomberg Businessweek might make on the basisof the survey
4–46 (AXCEL) Pierre operates a currency exchange office at Orly Airport in Paris. Hisoffice is open at night when the airport bank is closed, and he makes most of hisbusiness on returning U.S. tourists who need to change their remaining euros backto U.S. dollars. From experience, Pierre knows that the demand for dollars on anygiven night during high season is approximately normally distributed with mean$25,000 and standard deviation $5,000. If Pierre carries too much cash in dollarsovernight, he pays a penalty: interest on the cash. On the other hand, if he runs shortof cash during the night, he needs to send a person downtown to an all-night financialagency to get the required cash. This, too, is costly to him. Therefore, Pierre wouldlike to carry overnight an amount of money such that the demand on 85% of thenights will not exceed this amount. Can you help Pierre find the required amount ofdollars to carry?
Suppose the price per share of stock for a sample of 25 companies was recorded at the beginning of the first financial quarter and then again at the end of the first financial quarter. How stocks perform during the first financial quarter is an indicator of what is ahead for the stock market and the economy. Company End of 1st quarter Beginning of 1st quarter Company 1 54.69 55.32 Company 2 56.20 78.52 Company 3 103.07 110.50 Company 4 80.45 85.08 Company 5 126.51 140.73 Company 6 133.23 137.28 Company 7 32.56 42.57 Company 8 51.41 54.54 Company 9 35.90 37.94 Company 10 14.55 19.48 Company 11 33.04 40.04 Company 12 45.33 40.36 Company 13 185.13 189.53 Company 14 109.28 109.45 Company 15 72.46 92.15 Company 16 49.32 55.03 Company 17 36.70 43.73 Company 18 79.57 86.18 Company 19 95.50 87.45 Company 20 43.09 47.09 Company 21 51.32 66.70 Company 22 77.45 86.53 Company 23 46.77 45.99 Company 24 46.45 48.13 Company 25 130.36 129.08 (a)…
Consider the following time series data.Quarter Year 1 Year 2 Year 31 4 6 72 2 3 63 3 5 64 5 7 8a. Construct a time series plot. What type of pattern exists in the data?b. Show the four-quarter and centered moving average values for this time series.c. Compute seasonal indexes and adjusted seasonal indexes for the four quarters.
A sample containing years to maturity and yield for 40 corporate bonds are contained in the data given below. Years to Maturity Yield Years to Maturity Yield 27.75 6.075 5.00 6.888 10.50 5.966 10.50 3.477 18.50 4.444 8.00 2.893 13.50 5.569 18.50 4.945 2.75 7.673 5.50 1.991 10.00 6.969 26.50 1.320 13.50 2.956 21.25 1.867 2.75 2.241 13.25 2.189 24.25 0.916 11.75 7.499 1.75 5.323 25.75 5.686 10.25 1.720 13.50 5.195 16.75 3.987 20.00 1.710 22.50 6.405 27.00 1.121 21.25 4.456 1.25 4.146 23.75 2.725 6.25 7.115 8.75 5.497 5.25 1.211 27.75 6.392 4.50 5.998 24.00 0.989 9.00 2.458 15.00 6.169 8.00 1.162 29.00 5.105 8.75 4.978 a. What is the sample mean years to maturity for corporate bonds and what is the sample standard deviation? Mean (to 4 decimals) Standard deviation (to 4 decimals) b. Develop a 95%…
In the theory of time series, earthquakes can be considered as a. Seasonal Variation b. Cyclical Variation c. Irregular Variations d. Secular Trend
1. The monthly closing stock prices ( rounded to the nearest dollar) for Panera Bread Co. for the first six months of 2010 are reported in the following table Month closing stock price January2010 $71 February2010 $73 March 2010 $76 April 2010 $78 May 2010 $81 June 2010 $75 (d) Calculate sample variance

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