ERIC Number: ED428091
Record Type: Non-Journal
Publication Date: 1998-Oct-16
Reference Count: N/A
Graphical Representations of Data: Iowa Tests of Basic Skills, Ohio Sixth Grade Proficiency Tests, and SB 55.
Snodgrass, Donna G.; Salzman, James A.
One of the consequences of Ohio's educational accountability efforts mandated under Ohio Senate Bill 55 (SB 55) and the traditional testing programs of Ohio school districts is the generation of huge amounts of data. In order for school-based educators to organize and explore these voluminous amounts of information, they need exposure to user-friendly data analysis techniques. Two particularly useful approaches developed by J. Tukey (1977) are stem-and-leaf plots and box-and-whisker plots. The first section of this paper shows how both these types of graphical representation can be used to help educators understand student test performance and the distribution of test scores. The second section shows how a scatter plot can be used to illustrate how fifth graders' 1995-1996 Iowa Tests of Basic Skills reading scores and the same students' 1996-1997 scores on the Ohio Sixth Grade Reading Proficiency Test can be segmented into intervals that indicate each student's relative chance of passing the Ohio Sixth Grade Proficiency Tests. The scatter plot also shows the probably impact that higher Ohio 1998-99 standards will have on students' ability to pass the sixth grade reading proficiency test. (Contains 4 tables, 10 figures, and 6 references.) (SLD)
Publication Type: Reports - Descriptive; Speeches/Meeting Papers
Education Level: N/A
Authoring Institution: N/A
Identifiers - Assessments and Surveys: Iowa Tests of Basic Skills