In some applications, certain values in a data set may be considered more important than others. For
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Where ˆ‘xw is obtained by multiplying each data value by its weight and then adding the products. Suppose an instructor gives two exams and a final, assigning the final exam a weight twice that of each of the other exams. Find the weighted mean for a student who scores 73 and 67 on the first two exams and 85 on the final. (Hint: Here, x1 = 73, x2 = 67, x3 = 85, w1 = w2 = 1, and w3 = 2.)
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