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 literacy group wants to determine whether high school students that participated in a recent national reading program had higher standardized test scores than high school students that did not participated in the program”.
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, two groups of students are observed based on the scores, so as per the definition of the observational study that is members of a sample are measures or observed without being affected by the study, the given situation is an observational study.
Chapter 11 Solutions
Glencoe Algebra 2 Student Edition C2014
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