Researchers have developed a new computer-based self-paced course to teach algeb

Question

Researchers have developed a new computer-based self-paced course to teach algebra to students of varying ability. To test the effectiveness of the new method, researchers will administer a pre-test to 60 students taking part in the study. Half the students will be taught algebra in a traditional classroom, while the other half will receive instruction via the new method. A post-test will be given to all students upon completion of their instruction, and post-test results will be compared to pre-test results.

A. Is this an observational study or an experiment?

B. Explain how you would randomize. That is, how would you decide which children get taught with which method?

C. Imagine that researchers believe that children with high math ability are more likely to excel with this program than those with low math ability. Describe a matched-pairs design that could be used to test the researchers’ belief

Explanation / Answer

From the given hypothesis , definitely the case study turns to observations. An experimental is a controlled study in which the researcher attempts to understand the cause and effect with respect to relationships. The study is controlled in the sense that the researcher control's the subject.

For Knowing the performance of the student we have to use Various sampling methods and ANOVA techniques.

In ANOVA techniques we can easily identify the performance of students by using between classification and within classification between the groups.

We can use t-test for comparing abilities between the students.

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