To explain: The study method used in a given situation and if the sample statistics can estimate the population parameter with no bias.
An observational study is conducted to know about the type of books that are checked out such that librarian can replace a new book order accordingly. The sample data was collected for a period of three weeks and as it is not a random sampling, the sample statistics cannot be used to estimate the population parameter without any bias.
Given:
A librarian collects data on the type of books that are checked out such that orders for new books can be placed accordingly. The sample data is collected by observing every other person taking books for three weeks.
Explanation:
The sample data was collected by observing the type of book checked out for a period of three weeks and it may be not a true representation of the population.
The librarian observed the type of book checked out for three weeks so the study method is an observational study and as the sampling cannot be random so the sample statistic cannot be used to estimate the population parameter without any bias. The results obtained cannot be generalised with respect to the population.
Chapter 11 Solutions
High School Math 2015 Common Core Algebra 2 Student Edition Grades 10/11
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