Question

Calculate rank correlation coefficient for the ranks of 10 students assigned by two
teachers
Student 1
2. 3
5 6
7
8
9 10
4
5
8
7
2
10
6
Rank 1
2
2
4.
9
9.5 8
5
1
3
2
Rank 2
6
9.5
7 4
DLLA14SOLA

Answer 1

Answer:

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Answer 2

Answer:

px(x-3) + 9 = 0

px^2 - 3px + 9 = 0

As roots are equal then determinant D should be equal to 0.

We know, D = b^2 - 4ac

Then,

(-3p)^2 - 4*p*9 = 0

9p^2 - 36p = 0

p(p - 4) = 0

p = 0, 4