December 2, 2020 at 6:36 pm
#6074

Participant
Interesting, if I add a case to the end of a table and leave all the attributes blank for that case, the calculation changes as if a zero value has been added. But then if I add another case and fill in at least some of the attributes, the missing data in the previous case is suddenly just ignored, not treated as zero.
To be sure, is there a way to type in something instead of zero or another number in a cell for an attribute to tell CODAP “do not use this case when making calculations involving this attribute”?