
Concept explainers
To find: Whether the given situation describes a survey, an experiment, or an observational study.

Explanation of Solution
Given information:
The given situation is, “A group of high school students is randomly selected and asked to the complete the form”.
Concept used:
Survey: In a survey, data are collected from the responses given by members of a population regarding their characteristics, behaviours, or opinions.
Experiment: In an experiment, the sample is divided into two groups:
- An experiment group that undergoes a change, and
- A control group that does not undergoes the change.
Observational study: In an observational study, members of a sample are measures or observed without being affected by the study.
In the given situation, students are asked to fill the form to know the opinion about the new lunch rule, so as per the definition of the survey that is data are collected from the responses given by members of a population regarding their characteristics, behaviours, or opinions, the given situation is a survey. The sample of the students should be taken from each class of the school.
Chapter 11 Solutions
Glencoe Algebra 2 Student Edition C2014
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