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'0SR"W"&"\04"VraaSSSS"d m: GLENDALE COMMUNITY COLLEGE
COURSE ASSESSMENT REPORT
SEMESTER/YEAR: Fall 2010
DEPARTMENT: Mathematics
COURSE TITLE: Math 136/ Statistics
PARTICIPANTS : One section of M136, Schulten (32 students)
COURSE-LEVEL SLO(s) ASSESSED THIS SEMESTER:
Students will be able to construct confidence intervals and use them to draw conclusions about data.
METHODS OF ASSESSMENT: The SLO question was designed by the Statistics curriculum group and placed on the final exam of several sections of M136. It was graded on a scale from 0 totally wrong to 4 totally right, by each instructor. Results were tabulated and presented to the Statistics curriculum group.
ANALYSIS OF ASSESSMENT: What do these results tell you about your students' achievements on the targeted SLO(s)? The analysis has let us spot the problems that our students are weakest on, as well as insuring that grading is more or less even among sections.
SLO #4, which pertains to confidence intervals and their interpretation was assessed by multiple questions on the final exams. One of them had been pre-selected to give data for this assessment. This particular question dealt with the predicted outcome of an election, based on a results from a large survey, and had several parts:
Construct the interval using summary information. The correct interval predicted the candidate would receive 49% to 56% of the vote. 87% of students answered this part correctly. No improvements need to be made.
Answer a question about the interval. Did it indicate that the candidate was going to win the election? The correct answer was not necessarily, as 49% would have been insufficient. Only 62% of students gave this response, although many argued convincingly that with rounding the answer would have been yes.
What was the margin of error in this interval? The correct answer was 4%. 87% of students answered this question correctly.
PLAN: Indicate if your assessment results reveal a need for course improvement in order to improve student achievement, and what plans your department will make to do so.
We discussed the results at our Statistics Curriculum group meeting. It was noted that these results were a huge improvement over our anecdotal memories of previous years when students had to do the calculations by hand. Switching to the TI-83/84 for this course, or using computers, has made a big difference. It is much easier for students to obtain the numbers correctly, and as a result we can spend more time on the interpretation. However, although students were able to phrase the answer correctly, there was still concern that the understanding of the process was weaker than desired.
This semester we are recommending Statistics instructors focus on getting one step past phrasing the answer as a sentence to get students to use the numbers to answer further questions. We are trying to move away from rote memorization to show students the real utility in these concepts.
We have also asked for further funding to increase the number of TI83/84 calculators and computers available to the division, as they are necessary in order to focus the course on interpretation rather than calculation.
WHAT COURSE(s) WILL YOU ASSESS IN THE FOLLOWING SEMESTER? (____________________M136, multiple sections____)
Please submit this report to the Office of Research and Planning at HYPERLINK "mailto:ekarpp@glendale.edu" ekarpp@glendale.edu
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