Describes the cause and action for error messages.
Error Message(English)：
exclude error cells from average
How to average cells ignoring error values in Excel? - ExtendOffice
https://www.extendoffice.com/documents/excel/1715-excel-average-ignore-errors.html
Ignore Error Values When Finding the Average in Excel - Lifewire
https://www.lifewire.com/ignore-errors-when-finding-average-excel-3123698
AVERAGEIF(range, criteria) formula that ignores errors in the data ...
https://stackoverflow.com/questions/30242030/averageifrange-criteria-formula-that-ignores-errors-in-・・・
Excel - AVERAGEIFS function with ignoring NA query
https://stackoverflow.com/questions/44833286/excel-averageifs-function-with-ignoring-na-query
excel exclude a certain value from mode average
https://stackoverflow.com/questions/31031285/excel-exclude-a-certain-value-from-mode-average
Tolerant average (ignore #NA, etc.)
https://stackoverflow.com/questions/29292272/tolerant-average-ignore-na-etc
Calculate the average but ignore the error
https://stackoverflow.com/questions/38701511/calculate-the-average-but-ignore-the-error
How to correct a #VALUE! error in AVERAGE or SUM functions - Office ...
https://support.office.com/en-us/article/how-to-correct-a-value-error-in-average-or-sum-functions-3e・・・
Hide error values and error indicators in cells - Excel - Office Support
https://support.office.com/en-us/article/hide-error-values-and-error-indicators-in-cells-d171b96e-8f・・・