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A conventional exponential weighted moving average (EWMA) charting statistic evaluated by the data.
ewma(data, lambda, EWMA0)
An one-dimensional random variable.
An EWMA smooth constant, which is a scalar in [0,1].
A starting point of EWMA charting statistic.
A vector of EWMA charting statistics of data at different t times.
data
# NOT RUN { x = rnorm(20,0,1) ewma(x,0.05,0) # }
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