Marks Below: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100
No. Of students: 12, 32, 62, 105, 165, 205, 230, 238, 244, 245
Find the range and the coefficient of range.
Answers
Answered by
8
range =Highest term - lowest term
.: range=100 - 10 = 90
note :-in Discreate, range is calculated from Only X i.e. marks ,not frequencies i.e. no. of students.
Coffecient of range = H -L/H + L(highest-lowest/highrest+lowest)
Coff. of range = 100-10/100+10 = 90/110
ans = 0.82
.: range=100 - 10 = 90
note :-in Discreate, range is calculated from Only X i.e. marks ,not frequencies i.e. no. of students.
Coffecient of range = H -L/H + L(highest-lowest/highrest+lowest)
Coff. of range = 100-10/100+10 = 90/110
ans = 0.82
shashanksurenderrawa:
I got the same but in my TB the answers are being showed as range=100 and coefficient of range as 10
Hlo buddy,if you asked the question from book then you might know the anwser given in the book,so is it right anwser or not?.
may be the answer given in book is wrong.
Answered by
0
The range is 90 and the coefficient of the range is 0.0909
Explanation:
As we know, range is calculated with the values of x from the set Here x= marks below
∴range=maximum marks -minimum marks
∴range=100-10
∴range=90
coefficient of range is also calculated using the x observations
∴ coefficeint of range=lowest marks×highest marks/lowest marks+highest marks
∴coefficient of range=10×100/10
=1000/110
∴coefficient of range=9.0909
Similar questions