/// <summary>
/// Estimates the first quartile value from the provided samples.
/// Approximately median-unbiased regardless of the sample distribution (R8).
/// </summary>
/// <param name="data">The data sample sequence.</param>
public static double LowerQuartile(this IEnumerable <double?> data)
{
if (data == null)
{
throw new ArgumentNullException("data");
}
var array = data.Where(d => d.HasValue).Select(d => d.Value).ToArray();
return(ArrayStatistics.LowerQuartileInplace(array));
}
/// <summary>
/// Estimates the first quartile value from the provided samples.
/// Approximately median-unbiased regardless of the sample distribution (R8).
/// </summary>
/// <param name="data">The data sample sequence.</param>
public static double LowerQuartile(this IEnumerable <double> data)
{
if (data == null)
{
throw new ArgumentNullException("data");
}
var array = data.ToArray();
return(ArrayStatistics.LowerQuartileInplace(array));
}
/// <summary>
/// Estimates the first quartile value from the provided samples.
/// Approximately median-unbiased regardless of the sample distribution (R8).
/// </summary>
/// <param name="data">The data sample sequence.</param>
public static double LowerQuartile(this IEnumerable <double?> data)
{
var array = data.Where(d => d.HasValue).Select(d => d.Value).ToArray();
return(ArrayStatistics.LowerQuartileInplace(array));
}
/// <summary>
/// Estimates the first quartile value from the provided samples.
/// Approximately median-unbiased regardless of the sample distribution (R8).
/// </summary>
/// <param name="data">The data sample sequence.</param>
public static double LowerQuartile(this IEnumerable <double> data)
{
var array = data.ToArray();
return(ArrayStatistics.LowerQuartileInplace(array));
}