A small business is trying to determine the effect of a social media marketing campaign on sales. The plot below shows the relationship between the social media advertising costs and sales revenue. The linear regression output is shown below. 150000 ..-.. 0 E E 100000 -. o . Regression Statistics .5 . . . . - Multiple R 0.627615 0 g .. . . . . _ . ' R Square 0.393901 2 50000 ' . - ' Adjusted R Square 0.372254 g " , '. Standard Error 22533.47 ' Observations 30 [1,0000 15000 200 00 25000 Social media advertising costs (in dollars) What is the correlation between advertising costs and sales revenue\"? Pick v correlation