i

x_i

y_i

$r_{yi}^{*}$

r_yi

r_yi0

r_yi1

9

1

6

10

9.5

9.5

10

1

6

9

9.5

9.5

8

1

5

8

8

8

6

0

4

7

6.5

6.5

7

1

4

6

6.5

6.5

4

1

3

5

4.5

4.5

5

1

3

4

4.5

4.5

2

0

2

2

2.5

2.5

3

0

2

3

2.5

2.5

1

0

1

1

1

1

n_j

4

5

SR_j = ∑_i

12.5

42.5

SR_j/n_j

3.125

7.083