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Problems 1−6 refer to the n = 5 data points (x1, y1) = (0, 4), (x2, y2) = (1, 5), (x3,.y3) = (2, 7), (x4, y4) = (3, 9), and (x5, y5) = (4, 13). Calculate the indicated sum or product of sums. (If necessary, review Appendix B. I).
5.
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