Upload
chas
View
48
Download
0
Embed Size (px)
DESCRIPTION
Tutorial 10: Performing What-If Analyses. Objectives. Review the principles of cost-volume-profit relationships Discuss Excel what-if analysis tools. Understanding Cost-Volume-Profit Relationships. Cost-volume-profit ( CVP ) analysis - PowerPoint PPT Presentation
Citation preview
TUTORIAL 10: PERFORMING WHAT-IF
ANALYSES
Objectives
Review the principles of cost-volume-profit relationships
Discuss Excel what-if analysis tools
2
Understanding Cost-Volume-ProfitRelationships
Cost-volume-profit (CVP) analysisStudies the relationship between
expenses, sales volume, and profitability
Helps predict the effect of cutting overhead or raising prices on a company’s net income
3
CVP (Break – Even Analysis) Cont.
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
4
Comparing Expenses and Revenue
Types of expensesVariable 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
5
Determining the Break-Even Point
Break-even point: revenue equals expenses
A CVP chart shows the relationship between expenses and revenue
6
Ways to Perform What-If Analysis in Excel
Goal Seek Automates trial-and-error process
One-variable data tables Works by changing the value of one input
variable Two-variable data tables
Works by changing the value two input variables
The Scenario manager Input variables are changed using two or more
scenarios
Performing a What-If Analysis with Goal Seek
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
8
Performing a What-If Analysis with Goal Seek
9
One-variable Data Tables (Introduction)
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
Working with Data Tables 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
11
Creating a Two-Variable Data Table
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
12
Creating a Two-Variable Data Table
13
The Scenario Manager (Introduction)
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
The Scenario Manager (Cont)
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
Using the Scenario Manager
Use the Scenario Manager to define scenariosEach 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 cellsContain values that are changed under
the scenarioCan be located anywhere in the
worksheet
16
Using the Scenario Manager
Edit Scenario dialog box
17
Using the Scenario Manager
Scenario Values dialog box
18
Using the Scenario Manager
View the effect of each scenario by selecting it in the Scenario Manager dialog box
19
Using the Scenario Manager
Editing a ScenarioEdit the assumptions to view other
possibilitiesWorksheet calculations are
automatically updated to reflect the new scenario
20
Finding an Optimal Solution Using Solver
Solver searches for the optimal solution to a problem involving several variables
Arrives at optimal solutions through an iterative procedure
Because it is an add-in, Solver might need to be activated
21
Setting Up Solver to Find a Solution
Specify three Solver parameters Objective cell Variable (or changing) cells Constraints
22
Setting Up Solver Constraints
Constraints confine the solution within a reasonable set of defined limits
Constraints supported by Solver<=, >=, and =integer or intbinary or bindif or AllDifferent
23
Setting Up Solver Constraints
Add Constraint dialog box
24
Setting Up Solver Constraints
Completed Solver Parameters dialog box
25
Choosing a What-If Analysis Tool
26
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