Activity focus
- ordering before median
- odd vs even case
- most frequent value
Practice set
- Find the median of
11, 7, 9, 13, 5. - Find the median of
4, 6, 8, 10. - Find the mode of
3, 3, 4, 5, 5, 5, 6. - Can a dataset have two modes?
Answer key
- Ordered data:
5, 7, 9, 11, 13; median =9 (6 + 8)/2 = 75- Yes
Common mistakes
- picking the middle value before ordering
- choosing the largest value instead of most frequent value