The final marks in mathmatics et 30students are as follow.
53,61,48,60,78,68,55,100,67,90,75,88,77,37,84,58,48,62,56,44,58,52,64,98,59,70,39,50,60
(1) Arrange these marks increasing order?
Answers
ʀᴇǫᴜɪʀᴇᴅ ᴀɴsᴡᴇʀ-:
Given that final marks in mathematics of 30 students are as follows:
53,61,48,60,78,68,55,100,67,90
75,88,77,37,84,58,60,48,62,56
44,58,52,64,98,59,70,39,50,60
first of all arrange the marks as groups ascending order means lowest number to highest number
GroupAscending order 30 to 39 37, 39 40 to 49 44, 48, 48 50 to 59 50, 52, 53, 55, 56, 58, 58, 59 60 to 69 60, 60, 60, 61, 62, 64, 67, 68 70 to 79 70, 75, 77, 7880 to 89 84, 8890 to 100 90, 98, 100
We observe that
Highest score =100
Lowest score =37
We know Range = Highest − Lowest =100−37=63
→ if 40 is the pas mark then
number of the failed students =2
→ Numbers of tudents scoled 75 or more =8
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Answer:
ᴀɴsᴡᴇʀ࿐
ʀᴇǫᴜɪʀᴇᴅ ᴀɴsᴡᴇʀ-:
Given that final marks in mathematics of 30 students are as follows:
53,61,48,60,78,68,55,100,67,90
75,88,77,37,84,58,60,48,62,56
44,58,52,64,98,59,70,39,50,60
first of all arrange the marks as groups ascending order means lowest number to highest number
GroupAscending order 30 to 39 37, 39 40 to 49 44, 48, 48 50 to 59 50, 52, 53, 55, 56, 58, 58, 59 60 to 69 60, 60, 60, 61, 62, 64, 67, 68 70 to 79 70, 75, 77, 7880 to 89 84, 8890 to 100 90, 98, 100
We observe that
Highest score =100
Lowest score =37
We know Range = Highest − Lowest =100−37=63
→ if 40 is the pas mark then
number of the failed students =2
→ Numbers of tudents scoled 75 or more =8