Closed Issue: Performance of DescriptiveStatistics is questionable [5698]

I have a VERY large dataset (TBs in size) that I will be wanting to run against. I was testing against only 20 MBs of data and using the DescriptiveStatistics class. I noticed that performance was harsh when i used this class even if just asking for 1 or 2 types of stats. This would run the DescriptiveStatistics class over my aggregate contents in approx 104 seconds. (even just for the MEAN)

I then decided I should give the static class/ienumerable extensions a try, this shocked me in my evaluation of the exact same dataset, 69 milliseconds. (just MEAN)

I would like to suggest an update to the DescriptiveStatistics class. lazy load the statistics. this would increase performance drastically.

Thanks,