Exam 4: Gathering Data

A population list, map, directory, or other source used to represent the population from which a sample is taken is called a frame.

Alice Zhong is the VP of operations at Pearl Financial Services. She wants to measure customer satisfaction after a new website and other changes were introduced a few months ago. For this purpose, she uses random five-digit numbers from the website random.org (which offers true random numbers on the Internet). This is an example of ___.

What is the difference between a census and a sample?

Paige DeMarco is the Vice President for University Advancement at State University. She is responsible for the capital campaign to raise money for the new student services building. Paige plans to target alumni and acquires her sampling frame from the State University Office of Alumni Relations. She intends to contact these individuals regarding possible donations. Paige chooses her sample by selecting six-digit numbers (1 to 150,000) from a random number table. Her sample is a ___.