1. The number of units sold is a better independent variable than square feet of all manufacturing facilities in estimating the cost function of a headphone manufacturer.

True/False (reason)

2.The high-low method is likely to produce an inaccurate cost estimating equation when the organization has mixed costs

True/False (reason)

3. Periods of highest and lowest activity in a scatter diagram are always assumed to be representative of all cost observations.

True/False (reason)

4. Changes in technology during the period of cost observations should not be a concern in estimating cost.

True/False (reason)