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Differences between VCI, PRI and FSIQ scores required for statistical significance by age and overall standardization sample

 

 

VCI-FSIQ

 

PRI-FSIQ

Age

 

.10

.05

.01

 

.10

.05

.01

 

 

 

 

 

 

 

 

 

6

 

8.92

10.60

13.95

 

8.92

10.60

13.95

7

 

8.57

10.18

13.41

 

8.57

10.18

13.41

8

 

8.21

9.75

12.84

 

7.83

9.30

12.24

9

 

7.43

8.82

11.61

 

7.83

9.30

12.24

10

 

7.43

8.82

11.61

 

7.83

9.30

12.24

11

 

7.83

9.30

12.24

 

7.83

9.30

12.24

12

 

7.00

8.32

10.95

 

7.83

9.30

12.24

13

 

7.43

8.82

11.61

 

7.83

9.30

12.24

14

 

7.00

8.32

10.95

 

8.21

9.75

12.84

15

 

7.00

8.32

10.95

 

8.21

9.75

12.84

16

 

7.00

8.32

10.95

 

8.57

10.18

13.41

all

 

7.43

8.82

11.61

 

8.21

9.75

12.84

Differences required are based upon the standard error of measurement for each score for each age group and calculated with the following formula: