hw3_skeleton

3.1

• 4. The mean will likely be larger than the median because the median will not change according to the set of data.
• 5. The median would be located at whatever value is at position 5,000.
• 6. False, there can be a set of data that has more than one mode.
• 7. Sample mean = 11
• 8. Sample mean = 82
• 9. Population mean = 9
• 10. Population mean = 15
• 11. The mean price per ticket is $2646.
• 12. The missing value is 32

3.2

• 1. The sum of the deviations about the mean always equals 0.
• 2. The standard deviation is used in conjunction with the MEAN to numerically describe distributions that are bell shaped. The MEAN measures the center of the distribution while the standard deviation measures the SPREAD of the distrubtion.
• 3. TRUE
• 5. s^2 = 36 s = 4
• 6. s^2 = 100 s = 10
• 7. sigma^2 = 16 sigma = 4
• 8. stigma^2 = 64 sigma = 8

• 1. III

  2. I

  3. IV

  4. II