what is the difference between na and na what is na in openoffice can r use na for missing data what is na in excel which word represents missing data in an openoffice spreadsheet? what is na in excel what is the na in excel what is the formula for missing data in an openoffice spreadsheet? what is na mean in r how to represent missing data in an openoffice file? can you show missing data in openoffice what's a na? why is the excel na used in an analysis where do missing numbers fall in excel where is the function na in openoffice what is meant by na what is na in r which cell is na what is na in a r table how can you represent missing in openoffice