Are these research examples grouped or ungrouped data?
1. The time in seconds it takes 100 children to complete a cognitive skills game.
2. The number of teenagers who have experimented with smoking (yes no)
3. The age in years of freshman students in a local college.
4. The number of calories in school lunches in a sample of 32 local middle schools.
5. The number of traffic violations ticketed during a 3 month period in one of four high crime communities.