 Author:
 Hannah HynesPetty
 Subject:
 Mathematics
 Material Type:
 Assessment, Homework/Assignment
 Level:
 High School
 Tags:
 License:
 Creative Commons Attribution
 Language:
 English
 Media Formats:
 Downloadable docs
Education Standards
OSPI Statistics and Geometry Instructional Task: Walkathon
Overview
This resource was created by the Washington Office of Superintendent of Public Instruction.
Task
OSPI Statistics and Geometry Instructional Task E
Statistics and Geometry; Standard SID.A, Claim 3B; SID.A, Claim 1
Walkathon
Sam claims that of the twentytwo juniors at River City High School who participated in a walkathon walked at least ten miles.

 Justify or refute Sam’s claim. Show your reasoning using numbers and words.
 Estimate the typical number of miles the juniors walked. Explain why you chose this value.
Rubric
Rubric
Question Number  Standard/Claim  Description 
E  SID.A/Claim 3B SID.A/Claim 1  A 2point response demonstrates reasonable understanding of the standards and claims by doing all the following:
States the median should be used because the data is skewed. 
A 1point response demonstrates partial understanding of the standards and claims by doing two of the following:
States the median should be used because the data is skewed.  
A 0point response demonstrates almost no understanding of the standards and claims. 
OSPI Statistics and Geometry Instructional Task E Exemplar
OSPI Statistics and Geometry Instructional Task E
Statistics and Geometry; Standard SID.A, Claim 3B; SID.A, Claim 1
Walkathon
Sam claims that of the twentytwo juniors at River City High School who participated in a walkathon walked at least ten miles.

 Justify or refute Sam’s claim. Show your reasoning using numbers and words.
 Estimate the typical number of miles the juniors walked. Explain why you chose this value.
