If for some x ∈ R, the frequency distribution of the marks obtained by 20 students in a test is: Marks 2 3 5 7 No. of students (x+1)^{2} 2x- 5 x^2-3x x Then the mean of the marks is: [10 Apr 2019 Shift 1]

Statistics Part 1

Section: Mathematics

Question : 61 of 100

Marks: +1, -0

If for some x ∈ R, the frequency distribution of the marks obtained by 20 students in a test is:

Marks	2	3	5	7
No. of students	(x+1)2	2x−5	x2−3x	x

Then the mean of the marks is:

[10 Apr 2019 Shift 1]

Go to Question:

Prev Question

Next Question