mean warning argument is not numeric or logical returning NA

Question

I have a data frame with two columns  When I try to calculate mean  I get this message     1  NA Warning message  In mean default results    argument is not numeric or logical  returning NA    where  results  is my data set  Any advice on getting around this problem

User · Answer

The same error appears if you do not use the correct  numeric  format of your data in your data frame column using mean   function  Therefore  check your data using str data frame amp column  function to see what data type you have  and convert it to numeric format if necessary  For example  if your data is Character convert it with as numeric data frame column   or as a factor with as numeric as character data frame column    The mean function does not work with types other than numeric

User · Answer

From R 3 0 0 onwards mean  lt data frame gt   is defunct  and passing a data frame to mean will give the error you state      A data frame is a list of variables of the same number of rows with unique row names  given class  data frame     In your case  result has two variables  if your description is correct    You could obtain the column means by using any of the following  lapply results  mean  na rm   TRUE  sapply results  mean  na rm   TRUE  colMeans results  na rm   TRUE

User · Answer

If you just want to know the mean  you can use  summary results    It will give you more information than expected   ex  Mininum value  1st Qu   Median  Mean  3rd Qu  Maxinum value  number of NAs   Furthermore  If you want to get mean values of each column  you can simply use the method below   mean results columnName  na rm   TRUE    That will return mean value   you have to change  columnName  to your variable name

[r] mean() warning: argument is not numeric or logical: returning NA

Examples related to r