Pg. 144 The practice of Statistics for business and Economics 3rd ed. Case Study
ID: 3397554 • Letter: P
Question
Pg. 144 The practice of Statistics for business and Economics 3rd ed.
Case Study Exericse 3A.
The coffee data set coffeeexports contains information on the coffee production and exports for 45 coffee-producing countries. The unts are thousands of 60-kilogram bags. The variables are productio in 2008 and 2009 and exports of coffee in 2008 and 2009.
What is the correlation between 2008 production and 2008 export? Make a scatterplot with the least-squares line added for predicting 2008 exports using 2008 production. What does the value of r squared tell you? Identify any unusual values by country name.
With the results from above answer the following additional questions:
Describe what the case is all about and what the statistical issues are.
Describe what statistical techniques, tools or tests you will use to explore the issues.
Summarize the statistical results and make any appropriate conclusions you wish to make.
Country Prod2008 Prod2009 Export2008 Export2009 Angola 38 50 6 7 Bolivia 136 150 68 83 Brazil 45992 39470 29499 30331 Burundi 388 300 251 290 Cameroon 750 690 527 601 Central African Republic 79 75 33 25 Colombia 8664 9000 11085 7894 Congo Dem. Rep. of 399 425 199 152 Costa Rica 1320 1444 1440 1228 Cuba 127 120 4 7 Cote dIvoire 2353 1850 1585 1884 Dominican Republic 645 500 82 102 Ecuador 691 875 868 1086 El Salvador 1547 1115 1438 1309 Ethiopia 4350 4500 2852 1851 Ghana 27 25 34 19 Guatemala 3785 3500 3778 3493 Guinea 394 375 207 285 Haiti 359 350 17 16 Honduras 3450 3870 3259 3084 India 4371 4827 3377 3108 Indonesia 9350 10700 5741 6519 Jamaica 32 30 21 25 Kenya 572 815 608 569 Madagascar 726 625 194 41 Malawi 24 30 24 10 Mexico 4651 4200 2448 2838 Nicaragua 1615 1418 1625 1374 Nigeria 51 40 2 1 Panama 153 170 114 65 Papua New Guinea 1028 960 1096 993 Paraguay 22 30 3 1 Peru 3872 3750 3733 3074 Philippines 285 675 4 7 Rwanda 364 500 320 282 Sierra Leone 87 30 28 104 Sri Lanka 32 30 2 2 Tanzania 1186 667 818 1188 Thailand 675 930 175 186 Togo 138 140 121 152 Trinidad and Tobago 1 10 1 1 Uganda 3200 3000 3311 3020 Venezuela 930 850 125 15 Zambia 35 35 48 31 Zimbabwe 25 30 23 22Explanation / Answer
Pg. 144 The practice of Statistics for business and Economics 3rd ed. Case Study