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An IERI – International Educational Research Institute Journal

Table 4 Partially balanced incomplete block design for the 19 questionnaire scales

From: On imputation for planned missing data in context questionnaires using plausible values: a comparison of three designs

Form

Scales

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

1

0

1

1

0

1

1

0

1

0

1

1

1

0

1

0

0

0

0

0

2

1

1

0

0

0

1

1

0

1

1

0

0

0

0

1

0

1

1

0

3

1

1

0

1

0

0

0

1

0

0

0

1

0

1

1

1

0

1

0

4

0

1

0

0

0

0

0

1

1

1

0

0

1

1

0

1

1

0

1

5

0

1

1

0

1

0

1

0

0

0

0

1

1

0

1

1

1

0

0

6

0

1

0

1

0

1

0

0

0

0

1

1

1

0

0

0

1

1

1

7

1

0

0

0

1

1

1

1

0

0

1

0

0

0

0

1

1

0

1

8

0

0

1

1

0

0

1

1

1

0

1

0

1

1

0

0

1

0

0

9

0

0

1

1

0

1

0

1

0

1

0

1

0

0

1

0

1

0

1

10

1

0

0

1

1

1

0

0

1

1

0

1

1

0

0

1

0

0

0

11

1

0

1

0

1

0

0

0

1

0

0

1

0

1

0

0

1

1

1

12

0

1

0

1

1

1

1

0

1

0

0

0

0

1

1

0

0

0

1

13

1

1

0

1

1

0

1

1

0

1

0

0

1

0

0

0

0

1

0

14

1

0

0

0

0

0

1

0

0

1

1

1

1

1

1

0

0

0

1

15

0

0

1

0

0

0

1

1

1

1

1

1

0

0

0

1

0

1

0

16

1

0

1

0

0

1

1

0

0

0

0

0

1

1

0

1

0

1

1

17

0

0

1

0

1

1

0

1

1

0

1

0

1

0

1

0

0

1

0

18

0

0

0

1

1

0

0

0

0

1

1

0

0

1

1

1

1

1

0

19

1

1

1

1

0

0

0

0

1

0

1

0

0

0

1

1

0

0

1

  1. A “1” denotes the presence of the scale in the cluster, “0”, othersize