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.

Assessed with: MAFS.7.SP.1.2
 Test Item #: Sample Item 1
 Question:
A company has three sales departments (local, regional, and national) at each of several locations across the United States. Each local sales department has 120 employees. The company wants to survey its employees to determine the most effective sales method.
Which sample should the company use to arrive at the most reliable conclusion?
 Difficulty: N/A
 Type: MC: Multiple Choice
Related Courses
Related Access Points
Related Resources
Formative Assessments
Lesson Plans
Perspectives Video: Experts
Perspectives Video: Professional/Enthusiasts
Perspectives Video: Teaching Ideas
ProblemSolving Tasks
Text Resource
Virtual Manipulative
MFAS Formative Assessments
Students are asked to evaluate an inference made using a biased sampling method.
Students are asked to describe a method for collecting data in order to estimate the average height of 12 year old boys in the U.S.
Students are asked to choose a sampling method that would be most representative of a population and justify their selection.
Student Resources
Perspectives Video: Experts
The tide is high! How can we statistically prove there is a relationship between the tides on the Gulf Coast and in a fresh water spring 20 miles from each other?
Download the CPALMS Perspectives video student note taking guide.
Type: Perspectives Video: Expert
Statistical analysis played an essential role in using microgravity sensors to determine location of caves in Wakulla County.
Download the CPALMS Perspectives video student note taking guide.
Type: Perspectives Video: Expert
It's impossible to count every animal in a park, but with statistics and some engineering, biologists can come up with a good estimate.
Type: Perspectives Video: Expert
Perspectives Video: Professional/Enthusiast
Sometimes scientists conduct a census, too! Learn how population sampling can help monitor the progress of an ecological restoration project.
Type: Perspectives Video: Professional/Enthusiast
ProblemSolving Task
In a poll of Mr. Briggs's math class, 67% of the students say that math is their favorite academic subject. The editor of the school paper is in the class, and he wants to write an article for the paper saying that math is the most popular subject at the school. Explain why this is not a valid conclusion and suggest a way to gather better data to determine what subject is most popular.
Type: ProblemSolving Task
Virtual Manipulative
The students will play a classic game from a popular show. Through this they can explore the probability that the ball will land on each of the numbers and discover that more accurate results coming from repeated testing. The simulation can be adjusted to influence fairness and randomness of the results.
Type: Virtual Manipulative
Parent Resources
Perspectives Video: Expert
It's impossible to count every animal in a park, but with statistics and some engineering, biologists can come up with a good estimate.
Type: Perspectives Video: Expert
Perspectives Video: Professional/Enthusiast
Sometimes scientists conduct a census, too! Learn how population sampling can help monitor the progress of an ecological restoration project.
Type: Perspectives Video: Professional/Enthusiast
ProblemSolving Task
In a poll of Mr. Briggs's math class, 67% of the students say that math is their favorite academic subject. The editor of the school paper is in the class, and he wants to write an article for the paper saying that math is the most popular subject at the school. Explain why this is not a valid conclusion and suggest a way to gather better data to determine what subject is most popular.
Type: ProblemSolving Task