hw3_skeleton

3.1

• 4. If a histogram of data is right skewed, the mean is likely to be higher than the median because there are values in the tail that are much higher than most of the other values, which will make the mean closer to the tail.
• 5. The median would be located between the 5,000th and 5,001st numbers.
• 6. False, because a data set can have 2 different numbers appear the same amount of times.
• 7. Sample Mean=11
• 8. Sample Mean=82
• 9. Populaltion Mean=9
• 10. Populaltion Mean=15
• 11. 2646
• 12. 32

2.2

• 1. 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 distribution.
• 3. True
• 5. Sample Variance=36 Standard Deviation=6
• 6. Sample Variance=100 Standard Deviation=10
• 7. Population Variance=16 Standard Deviation=4
• 8. Sample Variance=64 Standard Deviation=8

• 1. III

  2. I

  3. IV

  4. II