The aim of this survey is to examine how humans aggregate statistical information. For that purpose you will be presented with 10 questions. Each question begins with a list of 25 numbers which represent the ages of employees in a particular company. The ages of the employees are drawn randomly from the worker database of that company and are presented in no particular order. Each new question presents the ages of workers belonging to a different company. The companies are in no way related to each other as far as their products, working conditions and hiring policies are concerned. 
For every question, the age of one employee of the company has been randomly omitted from the list. In the text box below the question, you are asked to guess the age of that particular employee. Please restrict your answers to whole numbers. Survey takers will be scored based on the accuracy of their answers. The closer your guess is to the age of the omitted employee, the higher your score on each question will be. We request that you answer the questions in such a way as to maximize the overall accuracy of your answers. We thank you for taking the time to participate in this survey.

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* 1. Company 1: 36 27 22 38 32 22 26 30 39 39 23 27 38 29 36 23 28 38 35 40 33 20 36 37 34

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* 2. Company 2: 33 29 28 32 23 30 26 26 24 18 30 37 24 26 23 26 29 42 29 32 35 27 39 34 32

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* 3. Company 3: 27 22 23 22 58 26 20 27 24 22 59 33 63 60 62 30 24 22 23 59 62 25 30 64 22

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* 4. Company 4: 31 33 62 59 27 61 60 31 27 37 60 60 63 35 59 31 27 57 64 56 59 60 27 27 30

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* 5. Company 5: 55 53 53 60 30 25 61 40 35 55 63 19 45 50 56 57 49 40 62 57 57 60 57 20 35

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* 6. Company 6: 55 29 23 34 36 41 47 30 51 56 58 24 29 42 20 46 34 47 20 38 25 48 54 44 37

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* 7. Company 7: 25 27 27 20 50 55 19 40 45 25 17 61 35 30 24 23 31 40 18 23 23 20 23 60 45

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* 8. Company 8: 63 68 67 68 32 64 70 63 66 68 31 57 27 30 28 60 66 68 67 31 28 65 60 26 68

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* 9. Company 10: 30 55 32 33 38 50 59 49 61 55 56 29 38 37 38 32 33 55 58 51 36 36 52 53

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