MAFS.912.S-IC.2.3
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MAFS.912.S-IC.2.3 – Recognize the purposes of and differences among sample surveys, experiments, and observational studies and explain how randomization relates to each..
- The benchmark will be assessed using Equation Response, Multiple choice Response, Open Response or Simulation Response.
- Items may require students to use data from a sample survey to estimate a population mean of proportion; develop a margin of error through the use of simulation models for random sampling.
- Items may require students to use data from a randomized experiment to compare two treatments.
- Items may require students to choose and interpret units.
Example One
For a statistics project, a group of students decide to collect data in order to approximate the percent of people in the town who are left-handed. They ask every third student entering the school cafeteria whether he or she is left-handed or right-handed. What type of method did this group use? Explain which population the group can draw a conclusion about based on their method. Suggest a better method that would allow the students to draw a conclusion about all the residents in their town.