Tue 6 Sep, 2011 01:34 pm - A low standard deviation indicates that the data points tend to be very close to the mean, whereas high standard deviation indicates that the data are spread out over a large range of values.... (view)
Tue 6 Sep, 2011 01:04 pm - At 2 pm the market always changes. Some time the changes are small, but sometimes the changes are dramatic. What happens every day at 2 pm? (view)
