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In summary, the findings underscore the importance of optimizing function usage in Excel, particularly when handling large data sets. Strategies include prioritizing criteria in conditional functions such as SUMIFS, preferring DSUM for complex conditions, and avoiding inefficient references like whole column references, especially in SUMPRODUCT functions.
To further enhance your proficiency in Excel formula optimization, consider exploring advanced courses that provide in-depth insights into these powerful functions and advanced techniques. If you're facing performance issues in your spreadsheets, the Free Advanced Formula Environment tool can offer considerable assistance.