https://www.youtube.com/watch?v=56__VRQLyqE&list=PLsri7w6p16vu3mMWzijxOmhrlvN23W04_&index=2 ================================================================================ Correlation analysis 2 variables: advertisement price, profit High advertisement price then profit? ================================================================================ Correlatioin analysis using scatter diagram ================================================================================ 2 variables: advertisement price, profit Create scatter plot of multiple 2D feature vector data Meaning - advertisement price increases, profit also increases - 2 variables have positive correlation relationship