Example 5.24 From the following data, determine (a) the lowest mark scored by the top 10% of the lass; and (b) the highest mark scored by the lowest 20% of the class. Marks No. of Students 90-100 80-89 9. 120 32 111 70-79 43 79 60-69 21 36 50-59 11 15 40-49 4. 30-39 1 1

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Example 5.24 From the following data, determine (a) the lowest mark scored by the top 10% of the
class; and (b) the highest mark scored by the lowest 20% of the class.
Marks
No. of Students
90-100
120
80-89
32
111
70-79
43
79
60-69
21
36
50-59
11
15
40-49
3
30-39
1
1
Transcribed Image Text:Example 5.24 From the following data, determine (a) the lowest mark scored by the top 10% of the class; and (b) the highest mark scored by the lowest 20% of the class. Marks No. of Students 90-100 120 80-89 32 111 70-79 43 79 60-69 21 36 50-59 11 15 40-49 3 30-39 1 1
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