grouped data is data which has been grouped: eg: 0-5, 6-10 ...
if this was ungrouped data it would be written as a list of
numbers: eg: 1,3,4,5,7,9 etc. If you search 'what is grouped and
ungrouped data' google, it explains it in the first link labelled:
'Grouped vs. Ungrouped Data How To Group Data' first page. hope
this helped. Maria, 15.