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5.- A statistics instructor at a large university would like to examine the relationship (if any) between the number of optional homework problems students do during the semester and their final course grade. Calculate coefficient of correlation. If it is showing linear behavior than describe it into a linear equation. (5)1 1S S Number of Final problemso Gradeo .510 720 600C 770 |C .770C 580 ...620 650 .680 ..780 .-650 660 .850 :930 660C ..-900 ..760 ...780 ..780 . 640 850 .910 890

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nal Ta 51 58 62. 6 S 一. 68 722).75 -1116 73D6 124.Sy 242 3 77 10,75 -bル ー7.3 5-6-16 -1た75-511 ,-Qy )15-56 60 ,06 22.53 10-58-3, 38ς I?.94 , 39,34 26.62 66:22 47구y 2457 5.98 구.g &s ㄧ 3-25- .25 2.9y 19 068 06S 12.0 78 91 5-25 9.8 2732 96 95 51-66 2.25 6.9y 1SDD6 4b:78 03.9 9) 9 13.25 58 332.04 9 106. 502.22 7635 29.S 12 23. 39 ,777 X 29-M

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