M119L05-page11 - Number of Units (Weights, w ) Grade Math 5...

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(Lesson 5: Measures of Center; 3-2) 3.11 PART E: WEIGHTED MEANS In some data sets, some values are more important than others. We use weights to measure the relative importance of data values. Think About It : If you get an “A” on a midterm worth 10% of a class and an “F” on a final worth 90% of the class, does that mean you will pass with a “C”? Example 4 (GPA) If you receive the following grade report for a term, what is your grade point average (GPA) for the term? Course
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Unformatted text preview: Number of Units (Weights, w ) Grade Math 5 A- Chemistry 4 D Biology 3 C+ GPA Scheme The grades are ordinal data values. They are nonnumeric, but there is a natural order among the possible grades: A+, A, A-, B+, etc. We will recode the grades as quantitative numeric data as follows: A = 4 B = 3 C = 2 D = 1 F = The + modifier raises the value by 0.3. The - modifier lowers the value by 0.3. The A- grade in Math, for example, corresponds to: 4 0.3 = 3.7 ....
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This note was uploaded on 12/29/2011 for the course MATH 119 taught by Professor Kim during the Fall '09 term at SUNY Stony Brook.

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