Choose TRUE or FALSE as applicable for each of the following items as they pertain to cost estimation methods. The account analysis method provides the most objective means for estimating costs. The high low method uses the highest and lowest historical COST data points. All historical data points, including outliers, should be used in developing a cost estimation model. Under the high low method, the variable cost per unit is calculated using the change in total costs divided by the change in total activity volume. Regression analysis selects a best fit line by minimizing differences between the cost estimation line and the historical data points