The scores of 30 students in a 50-item test was summarized on the right. What is the frequency of the Dz class? A. 4 C. 9 B. T D. 10 The scores 0130 students in a SCI-item test was summarized on the right. In solving for the 2nd Decile. what is the lower boundary? A. 24.5 C. 34.5 B. 29.5 D. 39.5 The scores of 30 students in a 50-item test was summarized on the right. What is the frequency of the P50 class? A. 4 C. 9 B. 7 D. 10 Consider the score distribution of 15 students given below: 33. 72, 87, 79, 82. 77, 80, 73, 86, 81, 79, 82. 79. 74, 74 What is Q1? A. 72 B. 74 C. 77 D. 79