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, “An advertising company wants to test a new logo design, The randomly selected 20 participants and watch them discuss the logo”.
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, group of 20 participants are observed while they were discussing about the logo, 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. The sample of the participants should be taken from company.
Chapter 11 Solutions
Glencoe Algebra 2 Student Edition C2014
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