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NumXL - Frequently Asked Questions

This collection of frequently asked questions (FAQ) provides brief answers to many common questions about NumXL Add-in. Please check here for answers before posting a question to one of the forums or before sending email to the support e-mail addresses.

General

  1. Where can I purchase NumXL?
  2. Which versions of Excel are compatible with Spider Add-ins?
  3. Who uses NumXL?
  4. I'm having trouble installing one of Spider products (e.g. NumXL). Where can I get support?
  5. What are the functions currently supported in NumXL?
  6. How often does Spider Financial release new versions of NumXL?
  7. Why is feature X missing from NumXL? It would be a very useful one.
  8. What do I need to know to use NumXL?

Installation

  1. How can I manually load or unload add-in program in Excel?
  2. How do I install NumXL on my new computer? Do I have to buy NumXL again?
  3. Can I use the same license key on more than one machine?
  4. Invalid license key or activation code?
  5. What is license key activation?
  6. Where can I find NumXL after installation?
  7. I have just installed the add-in, but a security warning appears in the toolbar now.
  8. NumXL is not loading in Excel 2007?
  9. NumXL is no longer loading in Excel.
  10. NumXL is not loading in Excel 2001-2003.
  11. How do I uninstall NumXL?
  12. How do I install NumXL?

Using NumXL

  1. How many observations you recommend to use with a the model: 1000? 1200? 2000? other?
  2. How do I compute the current volatility?
  3. How can I place the returned array from Function XYZ in one row?
  4. Function XYZ is an array function? what does that mean?
  5. I am trying to use an EWMA function, but it returns #N/A value, why?
  6. How can I use NumXL to compute the correlation matrix for 2 time series?
  7. Can I use NumXL in Visual Basic, or as a macro?
  8. How do I use differencing to obtain a stationary time series?
  9. Is there a way to generate the model's coefficients in Excel?
  10. How do I test whether a given time series is just noise?
  11. Can I compute the logarithmic return from a time series without  any intermediate calculations?
  12. How do I use NumXL functions in my Excel sheet?
  13. How compatible is NumXL with Microsoft Excel?

Documentation

  1. Is there a reference manual for NumXL?
  2. Is there a reference manual for NumXL functions?
  3. Are there tutorials available?
  4. Where can I view a list of NumXL features?