SAS/ETS 9.22 User''''s Guide 299 docx

To add a new row, click the Add button .A new entry appears in the Variable and Parameter Definitions table.. To change the type, click the down arrow and then select from the resulting

2972 F 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

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 F 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

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 F 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

Investment Analysis

2978

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 F 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 inFigure 48.2

Figure 48.2 Initializing Investment Analysis with the Toolbar

Getting Help

You can get help in Investment Analysis in three ways One way is to use the Help Menu, as displayed

inFigure 48.3 This is the right-most menu item on the menu bar

Figure 48.3 The Help Menu

Help buttons, as inFigure 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 (seeFigure 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