2972 ✦ Chapter 47: SAS/ETS Model Editor Window Reference Figure 47.38 continued The right pane has the following controls and fields: Equation: enable you to enter the equations for the model in the Equation editor. Variable and Parameter Definitions displays the variable and parameter definitions for the equations for the model that are shown in the Equation field. To add a new row, click the Add button .A new entry appears in the Variable and Parameter Definitions table. To edit the values for each entry, double-click the appropriate cell in the Variable and Parameter Definitions table. To delete an entry, select an existing entry and then click the Delete button . Name column specifies the name of the variable or parameter. Type column specifies the variable type. To change the type, click the down arrow and then select from the resulting list. Label column specifies the label of the variable or parameter. Instrument? column specifies whether the variable or parameter is an instrument. To change the value, click the down arrow and select from the resulting list. Model Equations ✦ 2973 Output To Data Set column specifies the set of data set options for displaying output and saving it to a data set. To change the value, click the down arrow and select from the resulting list. All dependent variables are instruments. specifies whether all dependent variables are instruments. Instruments Only Use Intercept. specifies whether instruments only use an intercept. Instruments Includes Intercept. specifies whether the instruments include an intercept. ID specifies the ID variable. To change the value, click the down arrow and select from the resulting list. Range: specifies the time range between observations in the data set. Select a range from list. Start: specifies the starting date for the time series in the data set. Enter a date value in this field, using a form that is recognizable as a SAS date informat (for example, 1998:1, feb1997, or 03mar1998). End: specifies the ending date for the time series in the data set. Enter a date value in this field, using a form that is recognizable as a SAS date informat (for example, 1998:1, feb1997, or 03mar1998). Model Equations To specify equations to use in the model, select Equations in the left pane of the model window. 2974 ✦ Chapter 47: SAS/ETS Model Editor Window Reference Figure 47.39 Create New Model Template—Equations This top of the right pane has the following controls and fields: Equation: enables you to enter the equations for the model. Define the Model Parameters, Variables, and Equations To select input variables for use by the SAS/ETS Model Editor and add them to the Variable and Parameter Definitions list, select Parameters and Variables in the left pane of the model window. To specify equations to use in the model, select Equations in the left pane. The right pane has the following controls and fields: Equation: enables you to enter the equations for the model. Variable and Parameter Definitions displays the variable and parameter definitions for the equations for the model that are shown in the Equation field. To add a new row, click the Add button . A new entry appears in the Variable and Parameter Definitions table. To edit the values for each entry, double-click the appropriate cell in the Variable and Parameter Definitions table. To delete an entry, select an existing entry and then click the Delete button . Model Constraints ✦ 2975 Name column specifies the name of the variable or parameter. Type column specifies the variable type. To change the type, click the down arrow and then select from the resulting list. Label column specifies the label of the variable or parameter. Instrument? column specifies whether the variable or parameter is an instrument. To change the value, click the down arrow and select from the resulting list. Output To Data Set column specifies the set of data set options for displaying output and saving it to a data set. To change the value, click the down arrow and select from the resulting list. All dependent variables are instruments. specifies whether all dependent variables are instruments. Instruments Only Use Intercept. specifies whether instruments only use an intercept. Instruments Includes Intercept. specifies whether the instruments include an intercept. ID specifies the ID variable. To change the value, click the down arrow and select from the resulting list. Range: specifies the time range between observations in the data set. Select a range from list. Start: specifies the starting date for the time series in the data set. Enter a date value in this field, using a form that is recognizable as a SAS date informat (for example, 1998:1, feb1997, or 03mar1998). End: specifies the ending date for the time series in the data set. Enter a date value in this field, using a form that is recognizable as a SAS date informat (for example, 1998:1, feb1997, or 03mar1998). Model Constraints To specify the boundary constraints and linear and nonlinear restrictions for the parameter estimates, select Contraints in the left pane of the model window. 2976 ✦ Chapter 47: SAS/ETS Model Editor Window Reference Figure 47.40 Create New Model Template—Constraints The right pane has the following controls and fields: Simple Bounds specifies the boundary constraints. To add a constraint, click the Add button . A new entry appears in the Simples Bounds table. To edit an entry, double-click the entry. To delete an entry, select it and then click the Delete button . Restrictions specifies the linear and nonlinear restrictions. To add a restriction, click the Add button . A new entry appears in the Restrictions table. To edit an entry, double-click the entry. To delete an entry, select it and then click the Delete button . Part VI Investment Analysis 2978 Chapter 48 Overview Contents About Investment Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2979 Starting Investment Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2980 Getting Help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2981 Using Help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2981 Software Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2982 About Investment Analysis The Investment Analysis system is an interactive environment for the time-value of money of a variety of investments: loans savings depreciations bonds generic cashflows Various analyses are provided to help analyze the value of investment alternatives: time value, periodic equivalent, internal rate of return, benefit-cost ratio, and breakeven analysis. These analyses can help answer a number of questions you may have about your investments: Which option is more profitable or less costly? Is it better to buy or rent? Are the extra fees for refinancing at a lower interest rate justified? What is the balance of this account after saving this amount periodically for so many years? How much is legally tax-deductible? 2980 ✦ Chapter 48: Overview Is this a reasonable price? Investment Analysis can be beneficial to users in many industries for a variety of decisions: manufacturing: cost justification of automation or any capital investment, replacement analysis of major equipment, or economic comparison of alternative designs government: setting funds for services finance: investment analysis and portfolio management for fixed-income securities Starting Investment Analysis There are two ways to invoke Investment Analysis from the main SAS window. One way is to select Solutions ! Analysis ! Investment Analysis from the main SAS menu, as displayed in Figure 48.1. Figure 48.1 Initializing Investment Analysis with the Menu Bar The other way is to type INVEST into the toolbar’s command prompt, as displayed in Figure 48.2. Figure 48.2 Initializing Investment Analysis with the Toolbar Using Help ✦ 2981 Getting Help You can get help in Investment Analysis in three ways. One way is to use the Help Menu, as displayed in Figure 48.3. This is the right-most menu item on the menu bar. Figure 48.3 The Help Menu Help buttons, as in Figure 48.4, provide another way to access help. Most dialog boxes provide help buttons in their lower-right corners. Figure 48.4 A Help Button Also, the toolbar has a button (see Figure 48.5) that invokes the help system. This is the right-most icon on the toolbar. Figure 48.5 The Help Icon Each of these methods invokes a browser that gives specific help for the active window. Using Help The chapters pertaining to Investment Analysis in this document typically have a section that intro- duces you to a menu and summarizes the options available through the menu. Such chapters then have sections titled Task and Dialog Box Guides. The Task section provides a description of how to perform many useful tasks. The Dialog Box Guide lists all dialog boxes pertinent to those tasks and gives a brief description of each element of each dialog box. . (for example, 199 8:1, feb 199 7, or 03mar 199 8). Model Equations To specify equations to use in the model, select Equations in the left pane of the model window. 297 4 ✦ Chapter 47: SAS/ETS Model. this field, using a form that is recognizable as a SAS date informat (for example, 199 8:1, feb 199 7, or 03mar 199 8). End: specifies the ending date for the time series in the data set. Enter a date. this field, using a form that is recognizable as a SAS date informat (for example, 199 8:1, feb 199 7, or 03mar 199 8). End: specifies the ending date for the time series in the data set. Enter a date