Unfazed❗️🎯

Key terms Y = f(x1, x2, x3) - want to improve sales (Y) of a product -> Y: output variable, dependent variable -control adveritsing budgets : sns(x1), streaming(x2), flier(x3) ->x1, x2, x3 : input variables, independent variables, predictors Key questions 1) What is the relationship between x1, x2, x3 and Y? -> learning 2) How accurately can we predict Y from x1, x2, x3? -> prediction data -- (l..