As part of an assessment for navigation, a professor has his students take a written test.

| November 18, 2015

As part of an assessment for navigation, a professor has his students take a written test. He teaches two sections of the class. The variance and standard deviations for test 1 and test 2 scores are shown below. What do the results say about the relative homogeneity of the two classes? Assume these are samples of a much larger population. MY THOUGHTS: I found the difference of the 2 standard deviations and came to the deduction that their is no homgeneity. Did I do that correctly? Also, I really want to be able to understand what it could mean that the tests were so different from one another…what is a potential example of why this might happen?

Summary statistics:

Column Variance Std. dev.

Test 1 858.26786 29.296209

Summary statistics:

Column Variance Std. dev.

Test 2 45.071429 6.7135258

 

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