From the above table, we can conclude that the every element of digital marketing is positively related to sales increase. It indicates that all elements of digital marketing show positive effect on firm’s sales. Online advertising, email marketing, social media and search engine optimization (SEO) are highly positively correlated with sales increase since showing value of r to be .869, .873, .840 and .840 respectively. The value of r of text messaging, affiliate marketing and pay per click (PPC) are .667, .560 and .560 which also shows low positive correlation with sales increase.