As we all know it when bitcoin price goes down, most of the coins are heading down too. That's because bitcoin it is the Heart of all coins if its sound then all of the coins are good, if it's Bad then all of the coins are going down too. most of the time other coins are following the bitcoin price. just look up the market right now.
Of course very true. The correlation between btc and alts is very clear and predictable. It's a good idea to exit all alts trades on any sign of bitcoin dump. Capital preservation is key!