Data Analysis Project
You have contracted with a local school district to help them decide whether to use an interactive computer program or a standard chapter from a textbook to teach students to use fractions. The school did a pilot study of the achievement levels where students were randomly assigned to one of the conditions. The school obtained the following results:
|
Computer Mediated Approach
|
Textbook Approach
|
|
97
89
95
79
93
|
58
90
75
83
47
|
1. Use summary calculations of the mean, standard deviation, and range for each condition to describe the characteristics of the two samples. What can you tell the school district about these two samples based on your descriptive analyses? Explain in complete sentences and in terms a person with limited skills and understanding of basic math or statistics could understand.
2. The school wants to know if there is a reliable difference in achievement levels between the computerized and standard textbook groups. Briefly describe the appropriate statistical strategy and mathematical expressions for addressing this problem. Be sure to explain the rationale behind your choice of strategy.
3. Perform the statistical procedures necessary to develop and document a conclusion about the mean differences between the two groups.
4. Graph the mean performance of the two groups on graph paper.
5. Explain and defend your conclusions in response to the school district's question. Explain in complete sentences and in terms a person with limited skills and understanding of basic math or statistics could understand.
6. Type your report and include your handwritten or computer generated calculations.
7. Include the scoring rubric as the top page with your name, section, semester, and year.