To find out the dip, look at the graph between months, weeks and days... later it can be concluded whether or not it is good to buy in the long run, If in the short term, you can analyze the 4 hour 1 hour chart even a matter of minutes... and make sure to always use a stop limit to avoid unwanted things, and stay safe,,,
Some people buy from the dip and don't care anything about why it dipping, can its recover? Month chart view is the way to goes to gauge this as many people already said in this thread, there is good coin and bad coin out there. All of them may dip but only the good ones will recover.