Quote from: RapTarX on January 28, 2020, 02:58:42 PM

Negative correlation refers to if BTC increases, A will decrease, if BTC decreases, A will increase. I guess that's what I'm looking for. Well, the result is limited to last 100 days.

Could happen if :

The coins/token was really a shitcoin with a huge gap order, the coins don't have volume trading so he have the same price went the correction was happen.
The coins/token on their rally at that time went the correction was happen, because of that the coins can still on green percentage for the change price 24h/7d.

Since you looking safe coins for an investment/trading, shitcoin cannot be an option for alternative investment the volume & order book was really small. I take one of example from the site :

HAC : Not listed on coinmarketcap
RAIN : No Data.
GunCoin : Not listed on coinmarketcap

I check one of the coins from the site, they said :

Quote

Does Hackspace Capital depend on Bitcoin? According to the correlation analysis, BTC and HAC have a very strong positive relationship. The correlation coefficient of their values is 0.92, which was estimated based on the last 100-days' price fluctuations of both currencies.

The coins information only listed on coingecko, why he got a result "very strong positive relationship against bitcoin" because the coins don't have so much activity trading its mean shitcoin without volume with almost 6 months according to the chart from yobit so he got the same price went the rally/correction was happen. Like what i said, on list 1.

However, in my opinion and research about the correlation against bitcoin. The result like this, went the correction was happening the USD & BTC value for the coins can be decrease, for the rally the value of USD can be increased/same but the value of Bitcoin can be decreased/same at thats time.