Most people believe that the price of altcoins' is determined by the price of bitcoin and that they tend to follow it's market movements.
I partially disagree with this. I have studied prices of coins and tokens on CMC and the fluctuations of each currency seems to be unique and independent of any other digital currency. Some show strong pumps when BTC goes down and some heavy dumps when BTC is rising.
Undoubtedly, there are market forces and factors which affects most currencies, this is not influenced by bitcoins price, it rather controls bitcoins' price as well as others.
So when trading or investing, make sure you treat each currency differently as they have different utilities.
Of course there is no doubt about it because when there is a bitcoin price variation occur most of the time a similar effect happens to altcoin prices and I think that happens mainly because bitcoins huge market dominance in the crypto world and also because bitcoins demand and popularity many people determine the crypto market progress through bitcoin prices so agree with the above