I don't know, I'm always skeptical towards statistics. Saying it Bitcoin always bounced back right after 20% dips does not provide any certainty it will do this again and again. As always, no one has the crystal ball otherwise we would all be millionaire.
I've just approached the cryptocurrency world and it's amazing how much volatility these currencies have: this means big gains but also big losses.
I may sound like an old, bitter investor (actually I am, as looking at year long graphs makes me feel like I've lost golden trains) but I would play it safe: invest what you can afford to lose, keep reading news, ride the wave, pull out on warning signs.