Illustration of rank correlation coefficient, Mathematics

Assignment Help:

Illustration of Rank Correlation Coefficient

Sometimes numerical data such refers to the quantifiable variables may be described after which a rank correlation coefficient may be worked out.

Is such a condition, the rank correlation coefficient will be determined after the described variables have been converted into ranks. See the given illustration:

Candidates

Math

r

Accounts

r

d

d2

P

92

1

67

5

-4

16

Q

82

3

88

1

2

4

R

60

5(5.5)

58

7(7.5)

-2

4

S

87

2

80

2

0

0

T

72

4

69

4

0

0

U

60

5(5.5)

77

3

-2.50

6.25

V

52

8

58

7(7.5)

0.5

0.25

W

50

9

60

6

3

9

X

47

10

32

10

0

0

Y

59

7

54

9

-2

4

 

 

 

 

 

 

Σd2 = 43.5

∴ Rank correlation r = 1 - {(6Σd2)/ (n (n2 -1))}

 = 1 -   {(6(43.5))/(10(102 -1))}

 = 1 -  (261/990)

= 0.74 as High positive correlation among mathematics marks and accounts


Related Discussions:- Illustration of rank correlation coefficient

Andrew is helping his mom remodel his room, The perimeter of Andrew''s rect...

The perimeter of Andrew''s rectangular room is 44 feet. What equation was used to find the perimeter?

What is the conditional probability based on die questions, A die is rolled...

A die is rolled twice and the sum of the numbers appearing on them is observed to be 7.What is the conditional probability that the number 2 has appeared at least once? A) 1/3

Geometric applications to the cross product, Geometric Applications to the ...

Geometric Applications to the Cross Product There are a so many geometric applications to the cross product also.  Assume we have three vectors a → , b → and c → and we make

Linear programming , Use the simplex method to solve the following LP Probl...

Use the simplex method to solve the following LP Problem. Max Z = 107x1+x2+2x3 Subject to 14x1+x2-6x3+3x4=7 16x1+x2-6x3 3x1-x2-x3 x1,x2,x3,x4 >=0

How do children learn maths?, HOW DO CHILDREN LEARN? : Have you ever tried...

HOW DO CHILDREN LEARN? : Have you ever tried teaching a young child what "ball" means? Did you do it by a lot of verbal description" Or did you let the child actually handle a b

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd