





Ŀ
  
  D U R H A M     
  
  G R O U P        ______________________________________________________
    
                    P. O. Box 7484                        Voice/FAX
                   Roanoke  VA  24019                    (703) Lne-8192


___________________________________________________________________________


           Micro Technology    Contract Lotus/Paradox Programming  
                     Quantitative and Statistical Analysis


Durham Group has enhanced eight of its Lotus 1-2-3 .Wk1 worksheets for
general use.  These are the worksheets that find the most frequent
application in our in-house consulting work, so we've nicknamed them the
"Big 8."

DGCapex .Wk1   Supports investment decisions via calculation of the NPV of
               a CapEx with a life of up to ten years.  The worksheet
               facilitates entry of fixed asset purchases, working capital
               requirements, and the continuing benefits and costs of the
               CapEx.  DGCapEx.Wk1 supports all depreciation methods, and
               provides on-screen guidelines and examples regarding the
               most common questions and errors encountered when evaluating
               a capital project.

               (The worksheet DGCapex.Wk1, and the associated Allways file,
               DGCapex.All are made available at no charge via the BBS
               channel as bannerware, in .ZIP format.  DGCapEx.Wk1 is an
               example of the quality to be found in our products, and we
               encourage you to review it.)

DGLseVal.Wk1   Supports financing decisions via present valuation of a
               lease versus a loan based on the equivalent cash flows.  The
               worksheet facilitates entry of any non-financing value
               contained in the lease and provides for a subjective
               management valuation of the legal and tax benefits of
               leasing.

DGLotSQC.Wk1   Supports quality decisions via calculation of the quality
               level of a lot from a sample qualitative batch up to size
               30, based on standard SPC techniques; normal curve and
               range-to-standard deviation tables are embedded in the
               worksheet.  

               A novice 1-2-3 user can enter, on a single screen, the
               qualitative batch measurements and the qualitative batch
               target, then immediately view the quality level, mean, and
               the estimated sample and population standard deviations.  A
               single keystroke sends the scaled bell curve representation
               of the batch to the screen or to print.  






               For direct labor applications where access to 1-2-3 is not
               practical, a single page form can be printed out of
               DGLotSQC.Wk1 that instructs the sampler how to calculate the
               quality level quickly, using only addition and division.

DGEOQ   .Wk1   Supports purchasing/scheduling decisions via calculation of
               the economic order quantity (or optimal lot/batch quantity)
               employing the classical method of comparison of inventory
               carry costs to onetime/setup costs.  A range over which the
               cost difference is negligible is also provided.  Graphical
               representation to support subjective decisions is available
               for view or print.

DGRatios.Wk1   Supports financing decisions via ratio analysis of financial
               position.  The user enters, on a single screen, nine balance
               sheet line items, eight income statement line items, and any
               stock parameters, and receives a report with:

                         Gross Profit Margin
                         Operating Profit Margin
                         Net Profit Margin 
                         Return on Assets 
                         ROA including interest
                         Return on Stockholder's Equity 
                         Return on Common Equity
                         Earnings per share
                         Current Ratio
                         Quick (Acid Test) Ratio
                         Inventory to Net Working Capital
                         Debt to Assets
                         Current Debt to Assets
                         Debt to Equity
                         Long Term Debt to Equity
                         Times Interest Earned
                         Fixed Charge Coverage
                         Inventory Turnover
                         Fixed Assets Turnover
                         Total Asset Turnover
                         Average Collection Period
                         Dividend Yield on Common Stock
                         Price-Earnings (P-E) Ratio
                         Dividend Payout Ratio
                         Cash Flow per Share

 
               The report includes a brief explanation of each ratio to the
               right of each result.

DGSeason.Wk1   Supports forecasting decisions via calculation of normalized
               seasonal indexes based on the ratio-to-moving-average
               method.  The worksheet supports weekly, monthly, or
               quarterly indexes, and provides for entry of subjective
               adjustments for outliers.  Graphical representation of the
               indexes is available for view or print.

DGMhrEst.Wk1   Supports project management via placement of confidence
               limits on direct labor completion estimates, empirically
               based.  
                
               The worksheet takes as input an original ESTIMATE by direct
               labor of manhours to complete (for 100% direct labor
               activities such as drafting, programming, etc.) then
               provides "best" and "worst" values for ACTUAL manhours to
               completion.  A historical analysis by Durham Group of such


               tasks indicates that the optimism/pessimism of direct
               labor's estimates is highly predictable in the long run. 

               Included in the worksheet is a random sample of 200 data
               points used in the development of the mathematical model, so
               users can graphically observe the actual relationship.   The
               report provides "best" and "worst" projections at the 80%,
               90%, 95%, and 98% confidence levels.

DGRegres.Wk1   Supports a spectrum of analytical decisions. Performs of a
               more detailed regression analysis, and allows two more
               independent variables, than / Data Regression; based on a
               Gauss-Jordan matrix reduction model.

               The summary report, designed for non-statisticians, provides
               a straightforward explanation of how to calculate a
               prediction, indicates the "strength" of the model, states
               which variables should be considered as "related" or "not
               related" with each other, and whether a variable should be
               removed from the model.

               The detail report, for statisticians, provides means and
               standard deviations; summations; the variable correlation
               coefficient matrix and  T-values; R Squared and adjusted R
               Squared; SSR ,SSE, and SST; T-tests for acceptance and for
               variable retention at 80%, 90%, 95%, and 98%.

All DG worksheets

                    Contain print macros that provide Allways formatted
                     reports and graphs when Allways is attached

                    Are not compiled, and contain no hidden formats, in
                     order to facilitate enduser modification

                    Contain descriptive macro names to facilitate the
                     enduser's tracing of the worksheet logic

                    Contains all documentation and examples on-screen,
                     where it supports the user best

Payback with The Durham Group Big 8 worksheet set occurs

                    The first time a user doesn't have to write a
                     worksheet

                    The first time you use a worksheet to make a cost-
                     effective decision

                    The first time you don't have to outsource a decision

To purchase a copy of the Durham Group Big 8 .Wk1 worksheet set:

                    Send check or money order to Durham Group for $65.00
                     with a cover letter indicating delivery details

                    Allow 4 weeks for delivery (Durham Group duplicates on
                     a make-to-order basis.)

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