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- 6. Find Under Armour’s annual revenue from the past 10 years. Are the data considered structured or unstructured? Explain. Are they cross-sectional or time series data?Explain the different factors that account for fluctuations in time series dataIdentify an appropriate Univariate time series model for the Iron Inc. stock returns and comment on the procedure used. (Use exponential smoothing or any of your choice) Iron Inc 1.5888 1.747917 1.115125 2.20568 0.37909 0.842537 0.345743 -0.17227 0.201313 0.574076 1.11301 0.592719 -0.19641 0.365459 0.588253 0.389854 0.527053 0.469088 1.180992 0.977212 -1.58603 0.901378 -0.1895 -0.35259 -0.54436 -0.0821 -0.35606 -1.62177 0.139707 -1.5904 -0.42531 0.768813 0.932478 0.335936 -0.72546 -1.51769 0 -0.11417 1.200006 1.016369 -0.30745 -1.03726 -0.79321 -0.42832 -0.25811 0.575046 0.34305 0.484337 0.320263 0.460166 -0.31493 -0.91901 -0.28985 2.412803 -0.31224 0.142358 1.023597 -0.22515 0.507764 -0.47715 0.817834 0.083901 0.307432 0.111453 1.196791 -0.16502 -0.90909 0.667215 0.220943 0.661316 0.109517 -1.42193 -0.08321 -0.22212 -1.50249…
- The desired seeding rate of a farmer on his corn field is 90,000 seeds per hectare. If emergence of 90% is expected, what should be expected plant population?A time series variable generally is correlated with one or more of its laggedvalues; that is, it is serially correlated. Explain How?Ten days of data on the S&P Dynamic Futures Index are as follows: 3.1) Construct a time series plot. What type of pattern exists in the data? 3.2) Use trial and error to find a value of the exponential smoothing coefficient that results in a relatively small MAE. You should try at least 5 values before making any conclusions.
- Define the term 'time series data' and continue to discuss the components of a time series.The following table shows the average price of tomatoes (in dollars per pound) in certain country from 2017 to 2021 Year Price 2017 1.715 2018 0.942 2019 0.916 2020 1.181 2021 1.614 Use 2017 as the base period to compute the simple index for this time series By what percentage did the price of tomatoes increase or decrease between 2017 and 2021? Calculate an exponential smoothed series for this time series, using ? = 0.6. Forecast the price of tomatoes in 2022.Illustrate vector autoregression (VAR) with two time series variables, Yt and Xt?
- Imagine that exactly 5 years ago, a team of epidemiologists identified a study population of 4,500 men, 65-74 years, in Cedar Rapids, Iowa, to determine the incidence of prostate cancer. Initial tests indicated that 7% of men already had prostate cancer (and therefore not at risk). The remaining men followed prospectively to present time to determine cumulative incidence (CI) of prostate cancer. By the end of the follow-up, 156 men had developed prostate cancer. What was 5-yr CI?By first calculating, and then combining, the number of counts in each individual 30- second period, what does student A determine as the average decay rate (in counts/sec), and what is its uncertainty?Starting at time 0, amusement park attendees enter the park and arrive according to a Poisson process with rate equal to 48 per hour. If 10 attendees arrive in the first minute, what is the expected number of attendees that arrive in the first two minutes?