hw3_skeleton

3.1

• 4. The mean is likely to be larger when data is right-skewed. This is because the mean is sensitive to extreme values, where the median is not. In right-skewed data, the extreme values lie in the tail, which pull the mean in the direction of that tail.
• 5. The median is somewhere between 5000 and 5001
• 6. False.
• 7. 11
• 8. 82
• 9. 9
• 10. 15
• 11. $2,646
• 12. 28

3.2

• 1. Zero.
• 2. Mean; mean; spread.
• 3. True.
• 5. Sample Variance=36, Sample Deviation=6
• 6. Sample Variance=100, Sample Deviation=10
• 7. Population Variance=16, Sample Deviation=4
• 8. Population Variance=64, Sample Deviation=8

• 1. III

  2. I

  3. IV

  4. II