In a given range confidence interval, if you want your mileage to be between 26 and 31 MPG, what are you trying to determine?

What does time series forecasting involve?

What does a negative slope in a linear regression model indicate?

Table below shows the sales revenue () of eight different companies based on advertising budget (), Research & Development (R&D) expenditure cost (), and number of employees (). Please note that ,  and  are independent variables, and y is the target/response variable. Advertising Budget () R&D Expenditure Cost () Number of Employees () Sales Revenue (y) 50 200 100 250 60 220 120 270 70 210 110 280 80 230 130 300 90 240 150 320 100 250 140 350 110 260 160 370 120 270 170 400  What is Mean Absolute Error (MAE)?

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?