In the tables below, the percentage of time that students did not attend class (x), and the percentage of students that obtained a semester mark below the class averag are recorded. Calculate the slope (rounded off to four decimals). X | 16 15 23 21 20 17 Y 12 11 9 14 13 7 Exy = 1237 Ex= 2140 Σy-760 Σχ- 112 Σ- 66 O A. 9.1072 O B. 0.1471 O C. 9.8667 O D. 0.1014

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