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Severity: Notice

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Function: _error_handler

File: /home/noqkocv1izd6/public_html/application/controllers/Questions.php
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Function: require_once

Determine whether the data set is a population or a sample. Explain your reasoning.
The salary of 9 teachers in a school.

Choose the correct answer below.
A. This is a sample, because it is a collection of salaries for some teachers in the school. 
B. This is a population, because it is a collection of salaries for some teachers in the school. 
C. This is a sample, because it is a collection of salaries for all teachers in the school. 
D. This is a population, because it is a collection of salaries for all teachers in the school.