Subject

Times per week in library
(X)

Grade (Y)

XY

X2

Y2

1

5
...

Question

Subject

Times per week in library
 (X)

Grade (Y)

XY

X2

Y2

1

5

96

480

25

9216

2

4

92

368

16

8464

3

75

225

9

5625

4

5

100

500

25

10000

5

2

69

138

4

4761

6

4

86

344

16

7396

7

4

91

364

16

8281

8

3

77

231

9

5929

9

2

65

130

4

4225

10

5

97

485

25

9409

?

37

848

3745

149

73306

Sum of X = 37
Sum of Y = 848
Sum of XY = 3745
Sum of X2 = 149
Sum of Y2 = 73306
N = 10

David · Accepted Answer

Sol: 
     We know that correlation coefficient is given as, 
                  
    
   
2 22 2
N xy x y
r
N x x N y y


    
      
  
   
 
Given that, 
                                
2
2
37,
848,
3265,
149,
73306,
10,

Subject Times per week in library (X) Grade (Y) XY X2 Y2 1 5 96 480 25 9216 2 4 92 368 16 8464 3 3 75 225 9 5625 4 5 100 500 25 10000 5 2 69 138 4 4761 6 4 86 344 16 7396 7 4 91 364 16 8281 8 3 77 231...

Solution

Answer To This Question Is Available To Download

Related Questions & Answers

Submit New Assignment

Subject	Times per week in library (X)	Grade (Y)	XY	X2	Y2
1	5	96	480	25	9216
2	4	92	368	16	8464
3	3	75	225	9	5625
4	5	100	500	25	10000
5	2	69	138	4	4761
6	4	86	344	16	7396
7	4	91	364	16	8281
8	3	77	231	9	5929
9	2	65	130	4	4225
10	5	97	485	25	9409
?	37	848	3745	149	73306