It is really easy to unhide all rows and/or columns in Excel, but make sure that the cells are not frozen and the sheet is not locked.

If Excel filter is not working after certain row, for merged cells, on large files or on protected sheet, then see this post.

Sometimes you may wish to find the mean, median, min, or max of a column feature. For example, there could be a customer relational database that you've been working with and you may wonder if there ...

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