1.Sampling error can be completely eliminated by taking larger sample sizcs.(2 分)

3. Place these variables in the following classification tables. For each table, summarize your observations and evaluate if the results are generally true. For example, salary is reporred as a continuous quantitative variable. It is also a continuous ratio-scaled variable. (8 分) a. Hair color b. Rating of a Finance Professor c. Dress size d. Number of patients seen