In ARIMA, what does the ‘MA’ part represent?

Using the Simple Moving Average (SMA) method with a window of 3 (3-month moving average), if the demands are 270, 241, 331, 299, 360, what is the forecast for month 6?

What does the Exponential Smoothing (EMS) method involve?

What is the key characteristic of a weighted moving average forecast?

In linear regression, what does the intercept represent?

What is the key difference between a one-tailed and a two-tailed confidence interval?

When constructing a confidence interval, what does the term “confidence” refer to?

When generating a Pivot Table, what does selecting “Add this data to the Data Model” do?

You are tasked with forecasting the next monthly sales value using an ARIMA(3,1,2) model based on the following information: The last 4 months of actual sales data (in units) are: 300, 320, 315, and 330. The errors (residuals) from the previous two months’ forecasts are 5 and -7, respectively. The ARIMA(3,1,2) model has the following parameters: ϕ1=0.6 ϕ2=0.3 ϕ3=−0.2 θ1=0.8 θ2=0.5 Assume there is no constant (μ=0) in the model. Using this information, calculate the forecast for the next month.

Which file format is preferred for faster data loading and less space consumption(in original format) when stored, according to the video lectures?