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Example of a Bundle Map

This bundle map designates how assessment booklets for a NAEP mathematics assessment at grade 4 in a jurisdiction with a relatively low sample size were grouped for shipping and distribution. There were 10 distinct assessment booklets for this sample, numbered 801 to 810.

Example of a Bundle Map
1) 801 805 808 809 807 802 804 803 806 810 801 808 807 803
2) 802 806 809 810 808 803 805 804 807 801 802 809 808 804
3) 803 807 810 801 809 804 806 805 808 802 803 810 809 805
4) 804 808 801 802 810 805 807 806 809 803 804 801 810 806
5) 805 809 802 803 801 806 808 807 810 804 805 802 801 807
6) 806 810 803 804 802 807 809 808 801 805 806 803 802 808
7) 807 801 804 805 803 808 810 809 802 806 807 804 803 809
8) 808 802 805 806 804 809 801 810 803 807 808 805 804 810
9) 809 803 806 807 805 810 802 801 804 808 809 806 805 801
10) 810 804 807 808 806 801 803 802 805 809 810 807 806 802

In the bundle map, each row represents a single bundle of booklets that was shrink-wrapped and sent to an assessment site. There are 14 positions (columns in the map) in each bundle; therefore, the bundle length is 14. Since mathematics was the only subject being assessed in this case, the spiral cycle was 10. Therefore, this map contains 10 bundles (rows). This is a “full-length” bundle map. This bundle map is laid out according to a vertical arrangement, meaning that the spiral cycle is positioned vertically (note that the first column of the map contains the full spiral cycle, ordered from 801 to 810). Each subsequent position (column) of the map contains the full spiral cycle, but the booklets are not in the same order.


Last updated 21 August 2008 (JL)

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National Center for Education Statistics - http://nces.ed.gov
U.S. Department of Education