Been away for a bit, happy to see we have some more blocks!  Thanks canaan x 2 and biffa!

I was crunching some numbers, and I joined this pool after we found block 504409 (our block # 2202).   

Looking at the 44 days I have been mining in the pool, I have been a party to 7 blocks, with a cumulative difficulty of 1,453.543%, or roughly 207.649% per block.

If I am correct, statistically speaking, we were expecting to find about 14 blocks in that same time frame, but due to bad luck we found half of that.

So my question is, is that correct?  Am I reading and understanding the numbers properly?   

Thanks in advance!