Scores of 30 students in a 20-item summative test. Score Frequency Lower Boundaries (LB) Less Than Cumulative Frequency (< cf) 18 - 20 17.5 30 15 - 17 14.5 25 12 - 14 11.5 20 9- 11 7. 8.5 14 6-8 4 5.5 7 3-5 3 2.5 3 Which of the following values represents the 8th decile? (Round to the nearest tenths) A. 15.5 В. 16.9 C. 17.2 D. 17.9 А В

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