Chapter 01 – Data and Data Preparation
Chapter 1. Data and Data Preparation Solutions 1. a. The population is all iPhone 4 users. b. Sample statistics 2. The value 35 is the estimated average age of the population. It is both costly and time consuming (likely impossible) to take a census of all video game players and compute the actual average age. 3. a. The population is all students enrolled in the accounting class. b. The value 3.29 represents the population parameter since we are not choosing a sample but drawing results from the actual population. 4. a. The population is all recent college graduates with an engineering degree. b. No, the average salary is a sample statistic computed from a sample, not the population. 5. a. The population is all elderly people. The sample consists of 949 elderly people. b. 22% and 17% represent sample statistics.
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