Evaluates the (

`x`

-day) Exponentially Weighted Moving Average(EWMA) of a time
series provided where

`x`

is the length of the time series array which is provided as a
parameter, for all periods for which sufficient data is provided.

# Syntax

#### Parameters

*s*
- A series where the first value corresponds to the value of the asset in the
`t`

th period, and the second value corresponds to the value of the asset in the `t-1`

-th
period and so on. *elementValue*
- Specifies the particular element value (for example High, Low, Close or Open of
the financial time series) which will be considered within this indicator evaluation. In particular,
if you wish to use the element value high then you should pass the parameter
High. In a similarly fashion if you wish to
use the low, close or open, then you should pass the parameter
Low, Close,
Open, respectively.
*smoothingFactor*
- The number between 0 and 1 which is known as a smoothing factor.
The closer the value is to zero the more influence more resent measurements
will have on the EWMA.
*lengthOfMA*
- The number of periods over which the moving average is evaluated
for each period.

#### Return Value

A series where the first term is the EWMA for the most recent period,
the second term is the EWMA for the previous period and so on.

# Exceptions

Exception | Description |

ArgumentException | Thrown if the Series is empty or if the value
given for the smoothing factor lies outside the closed range [0,1]. |

# See Also