hw3_skeleton

3.1

• 4. mean > median
• 5. the average between the 5000th and the 5001th number
• 6. F
• 7. x??=(20+13+4+8+10)/5=11
• 8. x??=(83+65+91+87+84)/5=82
• 9. ??=(3+6+10+12+14)/5=9
• 10. ??=(1+19+25+15+12+16+28+13+6)/9=15
• 11. mean=218469636/82566=2646
• 12. 26.5x2=53 53-21=32

3.2

• 1. zero
• 2. mean/mean/spread
• 3. T
• 5. s=square root{??(xi-x??)^2/n-1}=square root144/4=6
• 6. s=square root{??(xi-x??)^2/n-1}=square root400/4=10
• 7. ??=square root{??(xi-??)^2/N}=square root80/5=4
• 8. ??=square root{??(xi-??)^2/N}=square root576/9=8

• 1. IV

  2. III

  3. I

  4. II