Aresearcher at a large company has collected data on the beginning salary and current salary of 48 randomly selected employees. the least-squares regression equation for predicting their current salary from their beginning salary is = –2532.7 + 2.12x. the current salaries had a mean of $32,070 with a standard deviation of $15,300. the beginning salaries had a mean of $16,340 with a standard deviation of $5970. what is the correlation between current and beginning salary? group of answer choices