why does this exponential weighted moving average work in the past what is ewma used for in estimating can an estimate based on past history be robust how to calculate missing observations what type of data do we have with the ewma when an average is used in an estimate, it is how does exponential weighted moving average work exponential weighted moving average how to predict missing observations estimating based on past data what is the exponential weighted moving average how to estimate in presence of missing observations what type of moving average is used to estimate a value based on historical values which method would be robust in case of some observations missing? how do you estimate in absence of a missing observation how to estimate the presence of historical data can you estimate in presence of observations what is the best estimate for missing data? which is best to use exponential weighted moving average for the present estimating in presence of missing observations