Are we safe to say investing on both these coins are minimizing the risk; provided that I will have a good research on both these projects to ensure that these are not shitcoins? Ignore the fact that all coins without BTC is a shit (Note for bitcoin enthusiasts).
I would say yes, but if your portfolio consists of just A and B then I think you should look at the A vs B correlation directly.
But the reality you from price movement provider,none one of altcoin has a correlation positive against BTC went the correction/rally was happening.
Good point. I haven't done any proper analysis but I guess that in a strong trending market (e.g. 2017) no major altcoin has a negative correlation against Bitcoin.