S1 Help - Median of grouped/ungrouped data. Watch
Have been trying to figure this out all morning and getting nowhere.
The textbook I am using says that for grouped data the median is the n/2th value and that for ungrouped data it is the (n+1)/2th. This seems fine however then I did a past paper which asked me to calculate the median of a grouped frequency table and it used (n+1)/2. I'm not sure why this is, I thought maybe as sigma f was odd?
For reference I am doing CCEA S1 as I know forumla etc sometimes vary between exam boards.
Thanks in advance