WMA is better than SMA because of the ability to vary the weights! Time Series: Exponential Smoothing (ES) Main idea: The prediction of the future depends mostly on the most recent observation, and on the error for the latest forecast.
New Furnace Costs. A new furnace cost roughly $3,800 and most homeowners pay between $3,250 and $4,420 to install a new furnace. The lowest price that a homeowner might pay is $1,500, while the maximum price a homeowner has reported paying for a furnace replacement or installation was $8,000.
Equipment Costs. The average price for a new gas furnace ranges from around $2300 to install depending on manufacturer. The cost of a new electric furnace is $1,200 on average to install. Electric space heaters can be found for much less at most home improvement stores. While the upfront costs of electric heating may seem lower than those associated with gas heating, operating costs for gas heaters are often much lower than those associated with electric heat.