Stage 9 - Q10 - 7 marks
20226
Ten times are grouped as \(0\le t<10\) with frequency 5 and \(10\le t<20\) with frequency 5. Can one median class be identified with certainty? Give two compatible raw datasets whose medians lie in different classes.
Hint
For an even total, check both central observations; do not automatically choose the class where cumulative frequency first reaches half.