The following 6 Anchor Papers represent a range of score points and are used in conjunction with the rubrics to assess student responses.

Score for Anchor Paper #1: Rubric Score 1

Annotation: This response indicates little attempt to apply a reasonable strategy. The student incorrectly chooses Method A as providing the most representative sample. However, the justification for choosing Method A is relevant (its choosing people from each activity) since the student recognizes that all of a population must be represented. The response demonstrates a minimal understanding and analysis of the problem.

Score for Anchor Paper #2: Rubric Score 1

Annotation: This response indicates little attempt to apply a reasonable strategy. The student incorrectly chooses Method A as providing the most representative sample. Because the survey described in the item is asking about satisfaction with after-school activities, the student thinks only students in after-school activities should be able to answer the survey. The justification for choosing Method A shows that the student is drawing the sample from the wrong population; that is, students in after-school activities instead of the whole student body. However, this answer still shows some understanding of representative sampling. The justifications for not choosing Methods B and C also focus on the fact that the students selected may not be in after-school activities. The response demonstrates a minimal understanding and analysis of the problem.

Score for Anchor Paper #3: Rubric Score 2

Annotation: This response indicates an incomplete application of a reasonable strategy. The student correctly selects Method C as providing the most representative sample but gives no justification. Justification is given for why Method A does not provide the most representative sample (not every student in the school stays for after school activities). Justification is also given for why Method B does not provide the most representative sample (not all students are on the honor roll). The response demonstrates a conceptual understanding and analysis of the problem.

Score for Anchor Paper #4: Rubric Score 2

Annotation: This response indicates an incomplete application of a reasonable strategy. The student correctly selects Method C as providing the most representative sample and gives fully developed justification (you have a number of students from each grade + each number of students from that grade is 1/10 of the grade). No justification is given for why Methods A and B do not provide the most representative sample. The response demonstrates a conceptual understanding and analysis of the problem.

Score for Anchor Paper #5: Rubric Score 3

Annotation: This response indicates application of a reasonable strategy that leads to a correct solution in the context of the problem. The student correctly selects Method C as providing the most representative sample and gives justification (each class is represented by 1/10 of it’s population). Justification is provided as to why A and B were not chosen (because they bias by selecting only certain groups). The response demonstrates a complete understanding and analysis of the problem.

Score for Anchor Paper #6: Rubric Score 3

Annotation: This response indicates application of a reasonable strategy that leads to a correct solution in the context of the problem. The student correctly selects Method C as providing the most representative sample and gives a justification (you are surveying a lot of students, some from each grade). Complete justification is given for why Method A does not provide the most representative sample (you are only asking kids that are in the after school activity). Fully developed justification is also given for why Method B does not provide the most representative sample (you are only surveying kids on the honor roll, not kids who aren’t). The response demonstrates a complete understanding and analysis of the problem.