Methods of Determining cost behavior Judgment based methods Industrial engineering method Account analysis method Quantitative methods High-Low method Scatter plot method Least square method Judgment based method 1. Industrial Engineering Method Physical observation and analysis Time and motion study Very expensive to implement Seldom updated once they are done Mostly used in manufacturing process where there is a direct link between materials and labour inputs with the outputs. Can be applied to new processes and designs Less useful in case of costing services Account analysis method Costs are classified into fixed, variable and mixed costs Accountant uses judgment and experience to separate the accounts into two categories – Fixed and variable Once the fixed categories are known, the monthly cost can be computed and this is the fixed amount. The variable categories need to be further separated into categories according to the driver the accountant wishes to associate with the account Quantitative methods 1. High-Low method: The high-low method preselects the two points that are used to compute the parameters F ( Fixed cost) and V ( variable cost). High point is the point with the highest output or driver level. Low point is the point with the lowest output or driver level. High and low point determined by the independent variable 1.Determine high and low point The high number of moves is in May and the low number of moves is in January. 2. Calculate the variable rate for materials handling based on the number of moves. Variable rate = ( High cost – Low cost)/ ( High moves- Low moves) = ($7,500- $2,000)/ (500-100) = $13.75 per move 3. Calculate the fixed monthly cost of material handling Fixed cost= Total cost – ( Variable rate * moves) = $7500 –($13.75*500) =$625 4. Write the cost formula for the material handling activity showing the fixed cost and the variable rate. Total cost = Fixed cost + Variable cost (X) X= No of moves Total cost = $625+$13.75(x) 5. If company estimates that Nov. will have 350 moves, what is the total estimated materials handling cost for that month? Material handling cost = $625 +$13.75(350) = $ 5,437.50 6. If the company wants to estimate the materials handling cost for the coming year and expects 3,940 moves, what will be the material handling cost? 12($625)+$13.75(3940) = $61,675 2. Scatter plot method Plot the data points so that the relationship between materials handling costs and activity output can be seen. Scatter point can provide insight concerning the relationship between cost and output by allowing one to visually fit a line to the points on the scatter graph. 3. Method of Least Square Method of least square identifies the best-fitting line. With the help of this line cost can be estimated. Method of least square is also statistically called as regression model. Learning curve and Nonlinear cost behaviour Learning curve is an important type of nonlinear cost curve