/// <summary>
/// Returns the maximum value in the sample data.
/// Returns NaN if data is empty or if any entry is NaN.
/// </summary>
/// <param name="data">The sample data.</param>
/// <returns>The maximum value in the sample data.</returns>
public static double Maximum(this IEnumerable <double> data)
{
var array = data as double[];
return(array != null
? ArrayStatistics.Maximum(array)
: StreamingStatistics.Maximum(data));
}