1. Mathematics 7 Examination Scores of 50 students. (Use i = 6) 96 69 63 69 70 76 39 82 95 88 57 77 88 43 55 94 73 66 69 98 84 81 82 71 77 90 76 86 59 63 71 85 49 93 92 72 68 73 89 75 79 90 74 75 78...

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Extracted text: 1. Mathematics 7 Examination Scores of 50 students. (Use i = 6) 96 69 63 69 70 76 39 82 95 88 57 77 88 43 55 94 73 66 69 98 84 81 82 71 77 90 76 86 59 63 71 85 49 93 92 72 68 73 89 75 79 90 74 75 78 60 48 90 64 69 2. On the first day of class last school year, 30 students were asked for their one-way travel time from home to school (to the nearest 5 minutes). The resulting data were as follows: (Use eight class) 20 25 35 30 25 20 40 20 15 25 15 20 20 40 50 20 20 25 25 30 25 25 20 20 15 20 15 25


Extracted text: 34-36 II 2. 37-39 0. 40-42 Total 45 Example 3. Prepare a group frequency distribution on the scores of 40 students in a math quiz. Shown below are their scores. Use i = 3. 86 83 81 81 86 91 79 82 81 87 87 83 82 72 73 78 87 71 94 91 90 82 85 88 71 99 76 96 80 89 98 89 82 80 75 90 72 83 74 85 Solution: Follow the steps on constructing a group frequency distribution table. Tally Lowest score: 71 Class Interval Frequency (f) Highest score: 99 i = 3 71-73 74- 76 III 3 77-79 I3D Since the lowest score is 71 then the lower limit of first class interval will start at 71. 80-82 9. Thus, 83 - 85 Lower limit: 71 86-88 6. Upper limit: = 71 + (i – 1) = 71 + (3 – 1) = 71 + 2 89 -91 6. 92- 94 1 = 73 95 - 97 1 First class interval: 71-73 98 - 100 II Total 40 71-73 Second class interval: +3 +3 74-76 74-76 Third class interval: +3 +3 77-79 INDANAO STATE UNIVERSITY-INTEGRATED LABORATORY SCHOOL %3D