Amit;

1) It's not good, it's just chance and (without location) useless.

2) The odds are for having one or more 6+ quakes in a 3 day window and that's all you are predicting. You don't predict how many will happen.

3) That's like saying a coin tossed 1000 times will not be heads half the time.
In fact, it won't and there's a distribution curve that tells us how often it will come out at different values. And that curve tells me that your results are not significant.

Roger