Probability
and Statistics Worksheet 9
Answer Key
Complete the table below to find the
average rate of inflation in different countries in three months.
|  | Nigeria | Australia | England | South Africa | Argentina | 
| Jan | 10.4 | 5.5 | 6.5 | 8.8 | 12.0 | 
| Feb | 11.2 | 6.0 | 7.5 | 9.0 | 10.2 | 
| March | 9.9 | 4.4 | 5.5 | 8.3 | 11.1 | 
| Total | 31.5 | 15.9 | 19.5 | 26.1 | 33.3 | 
| Average | 10.5 | 5.3 | 6.5 | 8.7 | 11.1 | 
Complete the table below to find the
average of the number of people from different cities that participated in a
survey.
|  | Los Angeles | New York | New Jersey | Seattle | Washington | 
| Round #1 | 100 | 90 | 200 | 60 | 95 | 
| Round #2 | 101 | 99 | 150 | 70 | 50 | 
| Round #3 | 100 | 86 | 175 | 100 | 110 | 
| Total | 301 | 275 | 525 | 230 | 255 | 
| Average | 100.33 | 91.67 | 175 | 76.67 | 85 |