To gather information about starting salaries at companies listed in a stock index, a researcher contacts 91 of the 600 companies. Identify the population and the sample. 1. Identify the sample for the given problem. A. The 91 companies contacted B. All companies C. The 600 companies in the index D. All companies listed in any stock index 2. Describe the sample data set. A. The starting salaries for 91 companies B. The starting salaries for the 600 companies in the index C. The 91 companies contacted D. The 600 companies in the index