9_ch 20 Mechanical Design budynas_SM_ch20

9_ch 20 Mechanical Design budynas_SM_ch20 -...

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Chapter 20 9 20-11 Data Regression xy y x 2 y 2 x − ¯ x ( x −¯ x ) 2 0.2 7.1 7.931803 0.04 50.41 1.42 0.633333 0.401111111 0.4 10.3 9.884918 0.16 106.09 4.12 0.433333 0.187777778 0.6 12.1 11.838032 0.36 146.41 7.26 0.233333 0.054444444 0.8 13.8 13.791147 0.64 190.44 11.04 0.033333 0.001111111 1 16.2 15.744262 1.00 262.44 16.20 0.166666 0.027777778 2 25.2 25.509836 4.00 635.04 50.40 1.166666 1.361111111 5 84.7 6.2 1390.83 90.44 0 2.033333333 ˆ m = ¯ k = 6(90 . 44) 5(84 . 7) 6(6 . 2) (5) 2 = 9 . 7656 ˆ b = ¯ F i = 84 . 7
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