The marks distribution of 100 students of a college is as follows. Marks 10-20 20-40 40-70 70-90 90-100 No of students 15 20 30 20 15

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4. The marks distribution of 100 students of a college is as
follows.
Marks 10-20 20-40 40-70 70-90 90-100
No of students
a) Find the highest mark of the weakest 30% of the
students.
b) Find the lowest mark of top 40% of the students.
c) Find the limits and range of marks of middle 50% of
students
15
20
30
20
15
Transcribed Image Text:4. The marks distribution of 100 students of a college is as follows. Marks 10-20 20-40 40-70 70-90 90-100 No of students a) Find the highest mark of the weakest 30% of the students. b) Find the lowest mark of top 40% of the students. c) Find the limits and range of marks of middle 50% of students 15 20 30 20 15
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