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

Example of developing an understanding, In class 1, the teacher had written...

In class 1, the teacher had written down the digits 0,1, ...., 9 on the board. Then she made all the children recite the corresponding number names. Finally, she made them write th

Twice a number increased by 11 is equal to 32 less three, Twice a number in...

Twice a number increased by 11 is equal to 32 less than three times the number. Find out the number. Let x = the number. Now translate every part of the sentence. Twice a numb

.fractions, what is the difference between North America''s part of the tot...

what is the difference between North America''s part of the total population and Africa''s part

Lengrange''s mean value theorem, real life applications of lengrange''s mea...

real life applications of lengrange''s mean value theorem

Trignometry, Sin3x ? Solution) THE FORMULA IS RIGHT ,SO sin3x=3sin...

Sin3x ? Solution) THE FORMULA IS RIGHT ,SO sin3x=3sinx-4sin 3 x

Standard form of a complex number, Standard form of a complex number So...

Standard form of a complex number So, let's start out with some of the basic definitions & terminology for complex numbers. The standard form of a complex number is

How to adding rational expressions with common denominators, Adding Rationa...

Adding Rational Expressions with Common Denominators To add or subtract fractions or rational expressions with common denominators, all you do is add or subtract the numerators

Solve 9 sin ( 2 x )= -5 cos(2x ) on[-10, Solve 9 sin ( 2 x )= -5 cos(2x ) o...

Solve 9 sin ( 2 x )= -5 cos(2x ) on[-10,0]. Solution At first glance this problem appears to be at odds with the sentence preceding the example. However, it really isn't.

Geometry, all basic knowledge related to geometry

all basic knowledge related to geometry

Marketing research, project assignment of page no.19 question no.2

project assignment of page no.19 question no.2

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