i

x_i

y_i

$r_{yi}^{*}$

r_yi

r_yi0

r_yi1

7

1

4

7

7

7

5

0

3

6

5.5

5.5

6

1

3

5

5.5

5.5

3

0

2

4

3

3

2

1

2

3

3

3

4

1

2

2

3

3

1

0

1

1

1

1

n_j

3

4

SR_j = ∑_i

9.5

18.5

SR_j/n_j

3.167

4.625