1. Survey on favorite TV shows among teenager.
2. Analysis of student performance based on class attendance.
3. Comparison of sales figures for two different store.
4. Investigation of the relationship between hours of sleep and academic performance.
5. Analysis of the effectiveness of a weight loss program.
6. Study of the impact of social media on mental health.
7. Analysis of the effect of music on productivity.
8. Comparison of the prices of different brands of a particular product.
9. Investigation of the relationship between exercise and overall health.