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

Step functions, Before going to solving differential equations we must see ...

Before going to solving differential equations we must see one more function. Without Laplace transforms this would be much more hard to solve differential equations which involve

Spurious correlations, Spurious Correlations - in several rare situati...

Spurious Correlations - in several rare situations when plotting the data for x and y we may have a group indicating either positive correlation or negative (-ve) correlation

Dividing using compatible numbers, 4 friends have 235 marbles and want to s...

4 friends have 235 marbles and want to share.How many marbles should each friend receive?

Circle, a wheel revolves 360 deegre revolution in one minute .Find how many...

a wheel revolves 360 deegre revolution in one minute .Find how many radians will the wheel subtend in one second

What distances from the two gates should the pole, A pole has to be erected...

A pole has to be erected at a point on the boundary of a circular park of diameter 13m in such a way that the differences of its distances from two diametrically opposite fixed gat

Determine the leading order term the asymptotic expansion, Submit your work...

Submit your working in (neat) handwritten form (do not type up your solutions). For the plots that you generate in Maple or Matlab, you can print them out and attach them at the en

Complex, find all the 8th roots of (19+7i)

find all the 8th roots of (19+7i)

Negative number, what should added to the sum of (-26) and 31 to m...

what should added to the sum of (-26) and 31 to make it equal to the sum of (-35) and (-11) question #Minimum 100 words accepted#

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