New menu entry in "Data>>Statistics>>Descriptive Statistics..." to
quickly calculate basic statistics for a row of data. These are
Mean, Standard Error, Mode, Median, Variance, Standard Deviation,
Kurtosis, Skewness, Range, Minimum, Maximum, Sum and Count.
Change-Id: I7c4a75adf7731f42f9c7f8e741ff1b5fa245c1c8