I have students downloading .csv files into CODAP on Chromebooks. One student is unable to select every nth row when importing .csv files. Is there a setting that we need to change within CODAP or in Google Sheets that will allow her to select the nth row from a =.csv file to reduce the number of data points?
I bet Dan is right, but another tack is to define a new attribute as shown in the enclosed screenshot that is true for every nth case. Then you can select those cases in a graph as shown and, in the case table, delete the unselected cases.