Evaluate the Weighted Moving Average(WMA) where the weights associated to all the elements of
the historical values are given and the WMA is evaluated for all periods for which there is sufficient
historical data.

# Syntax

#### Parameters

*s*
- An statistical series
*weightSeries*
- A series of doubles which assigns weights to the k-th previous historical values
for the given period on which the moving average is being evaluated.
Here k is just the length of the weights array given.
*lengthOfMA*
- The number of periods over which the weighted moving average is evaluated.

#### Return Value

A series where the first term is the value of the moving average corresponding of the latest
period, the second term is the value for the previous period and so on.

# Exceptions

Exception | Description |

ArgumentException | Thrown if the length of the weightsSeries and s
differ or if either series is empty. |

# Remarks

# See Also