Massachusetts Comprehensive Assessment System

2019, Grade 6 Mathematics

Question 14: Constructed-Response

Reporting Category: Statistics and Probability
Standard: Mathematics.6.SP.B.05 - Summarize numerical data sets in relation to their context, such as by.
Item Description: Find and describe the median, mode, and mean of a data set; then given the mean, determine the value of an unknown number in another data set.

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Scoring Guide and Sample Student Work

Select a score point in the table below to view the sample student response.

Score	Description
4	The student response demonstrates an exemplary understanding of the Statistics and Probability concepts involved in summarizing numerical data sets in relation to their context by giving quantitative measures of center. The student finds the median, mode, and mean of a data set, and then determines a missing data point when given a new mean.
4
3	The student response demonstrates a good understanding of the Statistics and Probability concepts involved in summarizing numerical data sets in relation to their context by giving quantitative measures of center. Although there is significant evidence that the student was able to recognize and apply the concepts involved, some aspect of the response is flawed. As a result the response merits 3 points.
2	The student response demonstrates a fair understanding of the Statistics and Probability concepts involved in summarizing numerical data sets in relation to their context by giving quantitative measures of center. While some aspects of the task are completed correctly, others are not. The mixed evidence provided by the student merits 2 points.
1	The student response demonstrates a minimal understanding of the Statistics and Probability concepts involved in summarizing numerical data sets in relation to their context by giving quantitative measures of center.
0	The student response contains insufficient evidence of an understanding of the Statistics and Probability concepts involved in summarizing numerical data sets in relation to their context by giving quantitative measures of center to merit any points.

Note: There are 2 sample student responses for Score Point 4.

Grade 6 Mathematics

Question 8: Expressions and Equations

Question 14: Statistics and Probability

Return to the MCAS 2019 Student Work Directory

Last Updated: May 5, 2020