In your own words, describe time-series forecasting including the method(s), advantages, and disadvantages.In 2020 and 2021 the government's response to the Covid19 pandemic virtually shut down travel for various periods of time. What impact will this likely have on forecasting going forward, and if you were attempting a forecast for 2022 how would you approach it?What is the weighted forecast for the next period based on the following? Show your calculations. Month, average of 400. Weighted at 45% Last three months, average of 380. Weighted at 25% Last six months, average of 395, Weighted at 20% Last nine months, average of 350. Weighted at 10%