Question 24 1 pts Least-squares regression is a statistical method for deriving an estimated line of cost behavior. O True O False Question 25 1 pts Which of the following is true about the firm's margin of safety? It is the excess of expected sales over the break even sales level. It is the amount by which the sales of a company can drop before the company incurs a loss. O It can be expressed in units, dollars, or as a percentage of sales. O All of the above. O None of the above.