Explore the principles of cost-volume-profit relationships Perform a basic what-if analysis Use Goal Seek to calculate a solution Create a one-variable data table Create a two-variable data table Create and apply different Excel scenarios Generate a scenario summary report Generate a scenario PivotTable report Explore the principles of price elasticity Run Solver to calculate optimal solutions Create and apply constraints to a Solver model Save and load a Solver model 2 3 4 Cost-volume-profit (CVP) analysis Studies the relationship between expenses, sales volume, and profitability Helps predict the effect of cutting overhead or raising prices on a company’s net income 5 Used to determine at what point a product or activity becomes profitable In break even analysis, there are fixed costs that do not change There are variable costs based on the number of units sold These are the costs of raw materials and direct labor Break-Even Analysis determines how to just pay for costs (net income of zero) The break-even point is that point where the total net profit is 0 6 Types of expenses Variable expenses change in proportion to the amount of business a company does Fixed expense must be paid regardless of sales volume Total Expenses = Fixed expenses + variable expenses 7 Break-even point: revenue equals expenses A CVP chart shows the relationship between expenses and revenue 8 Goal Seek One-variable data tables Works by changing the value of one input variable Two-variable data tables Automates trial-and-error process Works by changing the value two input variables The Scenario manager Input variables are changed using two or more scenarios What-if analysis lets you explore the impact of changing different values in a worksheet Goal Seek automates trial-and-error process Allows you to specify a value for a calculated item Excel returns input value needed to reach the goal Goal Seek dialog box – determining break-even point 10 11 Use to calculate different expected outcomes by changing the value of a single variable Note that we could do this by hand using mixed formula references When creating data tables, the structure of the data must be in a specific form Display results from several what-if analyses One-variable data table Specify one input cell and any number of result cells Useful in business to explore how changing a single input cell can impact several result cells 13 Set up the worksheet for a data table Select the columnar grid for the data table Formula to copy Input values Select the input variable to be modified (interest rate) Select Column input cell because the data are columnar Gives a better picture of relationship between sales volume, revenue, and total expenses 18 Conceptually, they work like one-variable data tables Two inputs are changed instead of one input The resulting output is a grid Analyzes a variety of combinations simultaneously Uses two input cells, but displays only a single result value Must identify the row input cell and the column input cell 19 Set up the worksheet for a data table Select the two-dimensional grid for the data table Select the two input variables to be modified 24 25 26 27 Use the Scenario Manager to vary one or more input value Each unique combination of input values is called a scenario Input cells are called changing cells There can be many scenarios Scenarios usually vary from best possible case to worst possible case Scenario input must be well-structured Using the Scenario Manager can be confusing as you don’t see the input values to the scenarios Create scenarios to perform a what-if analysis with more than two input cells Define names for all input and result cells that you intend to use in the analysis Use named ranges for the input values to simplify the creation of scenarios Defined names automatically appear in reports generated by the Scenario Manager Using defined names makes it easier to work with scenarios and understand the scenario reports Use the Scenario Manager to define scenarios Each scenario includes a scenario name, input cells, and values for each input cell Number of scenarios is limited only by computer’s memory Input cells are referred to as changing cells Contain values that are changed under the scenario Can be located anywhere in the worksheet 30 Edit Scenario dialog box 31 Scenario Values dialog box 32 View the effect of each scenario by selecting it in the Scenario Manager dialog box 33 Editing a Scenario Edit the assumptions to view other possibilities Worksheet calculations are automatically updated to reflect the new scenario 34 Displays the values of the input cells and result cells under each scenario Tabular layout makes it simpler to compare results of each scenario Automatic formatting makes it useful for reports and meetings 35 36 Displays results from each scenario as a pivot field in a PivotTable 37 Results for the table can be displayed in a PivotChart 38 39 40 Solver searches for the optimal solution to a problem involving several variables Arrives at optimal solutions through an iterative procedure Because it is an addin, Solver might need to be activated 41 Specify three Solver parameters Objective cell Variable (or changing) cells Constraints 42 Constraints confine the solution within a reasonable set of defined limits Constraints supported by Solver <=, >=, and = integer or int binary or bin dif or AllDifferent 43 Add Constraint dialog box 44 Completed Solver Parameters dialog box 45 Solver can create three different reports Answer report (the most useful) Sensitivity report Limits report 46 Titles Information about the objective cell: location, cell label, and cell’s original value and final values Information about the changing cells (variable cells): location, column and row label, original value, and final value of each cell Information about the constraints: not binding and binding, and slack 47 48 Data tables • To perform several what-if analyses involving one or two input cells and to display analysis in a tabular format • Easily displayed as charts Create a scenario • For what-if analyses involving more than two input cells • Scenario summary tables and scenario PivotTables can be used to obtain a quick snapshot of several possible outcomes • Scenarios can be merged and shared among several workbooks Solver • To maximize or minimize a value (provide a single solution or “best outcome”) • To set a calculated cell to a specific value Goal Seek • If you don’t need to specify any constraints on your solution 49 Save parameters in cells in the worksheet Reload the parameters from the worksheet cells without having to reformulate the problem Create dozens of models that you can load and apply to your analysis as new data is entered Load/Save Model dialog box 50 Saved Solver model 51