Access Point #: MAFS.912.S-IC.2.AP.3dArchived Access Point

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Identify the differences between sample surveys, experiments and observational studies.
Clarifications:

Essential Understandings

Concrete:

  • (Survey) Given a statistical question, record student answers using pictures or manipulatives in a table. For example: What is your favorite lunch menu choice?
  • (Observational Study) Have students observe other students in the hall during the change of classes. Have students draw a picture of their observations.
  • (Experiment) Have students drop food coloring into water and observe for 5 minutes. Compare the change in the water with food coloring to water without food coloring.
Representation:
  • Understand that an observational study is where the researcher observes and measures characteristics of interest. They do not interact with the subjects.
  • Understand that an experiment is where a researcher applies a treatment/intervention to the group observed. The researcher may use a control group. They may also use a placebo (fake treatment).
  • Understand that a survey is an investigation of one or more of the characteristics of a population. The researcher interacts with the subjects. For example: The researcher asks 20 participants for their favorite subject in school.
  • Given a sample survey, experiment, and observational studies, list the characteristics of each.
  • Compare the differences between the characteristics of a sample survey, experiment and observational study.
General Information
Number: MAFS.912.S-IC.2.AP.3d
Category: Access Points
Date Adopted or Revised: 06/14
Cluster: Make inferences and justify conclusions from sample surveys, experiments, and observational studies. (Algebra 2 - Major Cluster) : 

Clusters should not be sorted from Major to Supporting and then taught in that order. To do so would strip the coherence of the mathematical ideas and miss the opportunity to enhance the major work of the grade with the supporting clusters.

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