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Validating spreadsheets

Resistance, Resistivity, Sheet Resistivity Every effort is made to avoid errors--please tell us if you find a mistake! Data Validation Example | Create Data Validation Rule | Input Message | Error Alert | Data Validation Result Use data validation in Excel to make sure that users enter certain values into a cell. On the Data tab, in the Data Tools group, click Data Validation. Input messages appear when the user selects the cell and tell the user what to enter. If users ignore the input message and enter a number that is not valid, you can show them an error alert. Check 'Show error alert after invalid data is entered'. All documents shown here are included in the seminar for instant download - and more!Learn from FDA Warning Letters what inspectors look for and what mistakes other companies make so you can avoid them This seminar has been recorded and is available on CD and for instant download. You can use Excel's Go To Special feature to quickly select all cells with data validation. Result: Note: to remove data validation from a cell, select the cell, on the Data tab, in the Data Tools group, click Data Validation, and then click Clear All.

Traffic jams have been compared with fluid flow when shocks occur. Instead, my favorite analogy is stock market panics.However, capacity is limited since drivers have speed limits and minimum comfortable separations. The key idea is: "When traffic is heavy, once you hit the brakes, speeds drop, the highway's capacity drops, and the only solution is for cars to stop." The spreadsheet below generated the graph above.At rush hour, more and more cars on the road eventually leads to small separations between cars, drivers put on the brakes, and at lower speeds the highway's capacity declines dramatically. The graph and the spreadsheet show how smaller separation distance and higher speed will increase the flow of cars--but there is a limit where we won't drive faster or closer, and we put on our brakes.The FDA defines validation as "The establishing of documented evidence which provides a high degree of assurance that a specific process will consistently produce a product meeting its predetermined specifications and quality attributes." Spreadsheets and automated forms are included in this definition.The first step of validating a spreadsheet or form is to outline the process requirements of the form or spreadsheet.Like any other software also Excel spreadsheets must be validated when used in regulated environment.However, while the validation of vendor supplied software applications is well understood and performed by validation professionals, this is not the case with spreadsheet applications. During the seminar, the speaker will present strategies and give practical recommendations.This included seminars, workshops and presentations for the US FDA, SFDA, KFDA, HSA, ISPE, PDA, PIC/S and several national health agencies. Ludwig Huber is a frequent presenter at IVT conferences and has been awarded as the ' Presenter of the Year' out of 170 speakers.This photo is from IVT's conference on Network Qualification with Ludwig Huber as plenary speaker. Huber has published several books related to validation and compliance, for example: Validation of Computerized Analytical and Networked Systems.At 65 mph, how close will you comfortably get to the car ahead of you?Under 3 car lengths separation is not a leisurely drive for me, and I'm on edge at less than two!


  1. Validating Excel-based Spreadsheets - Download as Powerpoint Presentation.ppt, PDF File.pdf, Text File.txt or view presentation slides online. Validating.

  2. An Excel inspired data validation implemented by the DevExpress MVC Spreadsheet helps prevent end-users from entering wrong values into worksheet cells.

  3. Spreadsheet Validation. Are We Validating Excel. Tips for Testing Spreadsheets.

  4. Since the release of 21 CFR Part 11 in 1997, the validation and verification of electronic records has been at the forefront of the Information Technology IT.

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