Converting Standard Scores to Percentile Ranks and Other Scaled Scores - TABLE B.1 - Reference table

Q: Table B.1 converts which types of scores into percentile ranks?

Table B.1 converts DAP:IQ standard scores into percentile ranks and related scaled-score formats, including T-score, Z-score, and Stanine.

Q: What are the parameters for the DAP:IQ Standard Score, T-score, Z-score, and Stanine in the table?

DAP:IQ Standard Score uses M=100, SD=15; T-score uses M=50, SD=10; Z-score uses M=0, SD=1; Stanine uses M=5, SD=2.

Q: How does the table handle extreme percentile ranks such as >99 and <1?

The table lists grouped percentile thresholds (e.g., >99 and <1) and provides the corresponding range of scaled scores for each threshold.

Sep 15, 2026

Uploaded by supergirl

Appendix B provides conversion reference values for interpreting DAP:IQ standardized scores in multiple statistical formats. Table B.1 maps Percentile Rank to scaled scores including DAP:IQ Standard Score (M=100, SD=15), T-score (M=50, SD=10), Z-score (M=0, SD=1), and Stanine (M=5, SD=2). The tables include ranges (e.g., >99, 99, 98, and lower than 1) and show corresponding equivalents across these scoring systems for quick score translation.

LanguageEnglish

CategoryExam

FormatPDF

Pages4

Reading Time10 min

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TABLE B.1 Converting Standard Scores to Percentile Ranks and Other Scaled Scores

TABLE C.1 Converting Raw Scores to Age and Grade Equivalents

Appendix B Converting Standard Scores to PercentileRanks and Other Scaled Scores # TABLE B.1Converting Standard Scores to Percentile Ranks and Other Scaled Scores | Percentile
Rank | Scaled Scores | | | | | --- | --- | --- | --- | --- | | | DAP:IQ Standard
Score
(M=100,SD=15) | T-score
(M=50,SD=10) | Z-score
(M=0,SD=1) | Stanine
(M=5,SD=2) | | | | | | | | | | | | | | >99 | 145 | 80 | +3.00 | 9 | | >99 | 144 | 79 | +2.93 | 9 | | >99 | 143 | 一 | +2.87 | 9 | | >99 | 142 | 78 | +2.80 | 9 | | >99
>99 | 141
140 | 77 | +2.73
+2.67 | 9
9 | | | | | | | | >99 | 139 | 76 | +2.60 | 9 | | >99 | 138 | 75 | +2.53 | 9 | | >99 | 137 | 一
74 | +2.47
+2.40 | 9 | | >99 | 136 | | | 9 | | 99 | 135 | 73 | +2.33 | 9 | | 99 | 134 | --- | +2.27 | 9 | | 99 | 133 | 72 | +2.20 | 9 | | 99 | 132 | 71 | +2.13 | 9 | | 98 | 131 | 一 | +2.07 | 9 | | 98 | 130 | 70 | +2.00 | 9 | | 97 | 129 | 69 | +1.90 | 9 | | 97 | 128 | 一 | +1.87 | 9 | | 97 | 127 | 68 | +1.80 | 9 | | 96 | 126 | 67 | +1.73 | 8 | | 95
95 | 125
124 | —
66 | +1,67
+1.60 | 8
8 | | | | | | | | 94 | 123 | 65 | +1.53 | 8 | | 93 | 122 | 一 | +1.47 | 8 | | 92 | 121 | 64 | +1.40 | 8 | | 91 | 120 | 63 | +1.33 | 8 | | 90 | 119 | 一 | +1.27 | 8 | | 89 | 118 | 62 | +1.20 | 7 | | 87 | 117 | 61 | +1.13 | 7 | | 86 | 116 | 一 | +1.07 | 7 | | 84 | 115 | 60 | +1.00 | 7 | | 82 | 114 | 59 | +0.93 | 7 | | 81 | 113 | 一 | +0.87 | 7 | | 79 | 112 | 58 | +0.80 | 7 | | 77 | 111 | 57 | +0.73 | 6 | | 75 | 110 | 一 | +0.67 | 6 | | 73 | 109 | 56 | +0.53 | 6 | | 70 | 108 | 55 | +0.50 | 6 | | 68 | 107 | 一 | +0.47 | 6 | | 65 | 106 | 54 | +0.40 | 6 | | 63
61 | 105
104 | 53 | +0.33
+0.27 | 6
6 | | | | | | | | 58 | 103 | 52 | +0.20 | 5 | | 55 | 102 | 51 | +0.13 | 5 | | 53 | 101 | 一 | +0.07 | 5 | | 50 | 100 | 50 | 0.00 | 5 | | 47 | 99 | 49 | -0.07 | 5 | | 45 | 98 | 一 | -0.13 | 5 | TABLE B.1 Continued. | Percentile
Rank | Scaled Scores | | | | | --- | --- | --- | --- | --- | | | DAP:IQ Standard
Score
(M=100,SD=15) | T-score
(M=50,SD=10) | Z-score
(M=0,SD=1) | Stanine
(M=5,SD=2) | | | | | | | | | | | | | | 42 | 97 | 48 | -0.20 | 5 | | 39 | 96 | 47 | -0.27 | 4 | | 37 | 95 | 一 | -0.33 | 4 | | 35 | 94 | 46 | -0.40 | 4 | | 32 | 93 | 45 | -0.47 | 4 | | 30 | 92 | — | -0.53 | 4 | | 27 | 91 | 44 | -0.60 | 4 | | 25 | 90 | 43 | -0.67 | 4 | | 23 | 89 | 一 | -0.73 | 3 | | 21 | 88 | 42 | -0.80 | 3 | | 19 | 87 | 41 | -0.87 | 3 | | 18 | 86 | 一 | -0.93 | 3 | | 16 | 85 | 40 | -1.00 | 3 | | 14 | 84 | 39 | -1.07 | 3 | | 13 | 83 | 一 | -1.13 | 3 | | 12 | 82 | 38 | -1.20 | 3 | | 10 | 81 | 37 | -1.27 | 2 | | 9 | 80 | 一 | -1.33 | 2 | | 8 | 79 | 36 | -1.40 | 2 | | 7 | 78 | 35 | -1.47 | 2 | | 6 | 77 | 一 | -1.53 | 2 | | 5 | 76 | 34 | -1.60 | 2 | | 5 | 75 | 33 | -1.67 | 2 | | 4 | 74 | 一 | -1.73 | 1 | | 3 | 73 | 32 | -1.80 | 1 | | 3 | 72 | 31 | -1.87 | 1 | | 3 | 71 | 一 | -1.93 | 1 | | 2 | 70 | 30 | -2.00 | 1 | | 1 | 69 | 29 | -2.07 | 1 | | 1 | 68 | - | -2.13 | 1 | | 1 | 67 | 28 | -2.20
-2.27 | 1
1 | | 1 | 66 | 27 | | | | <1 | 65 | 一 | -2.33
-2.40 | 1 | | <1 | 64 | 26 | | 1 | | <1

FAQs

Table B.1 converts which types of scores into percentile ranks?

Table B.1 converts DAP:IQ standard scores into percentile ranks and related scaled-score formats, including T-score, Z-score, and Stanine.

What are the parameters for the DAP:IQ Standard Score, T-score, Z-score, and Stanine in the table?

DAP:IQ Standard Score uses M=100, SD=15; T-score uses M=50, SD=10; Z-score uses M=0, SD=1; Stanine uses M=5, SD=2.

How does the table handle extreme percentile ranks such as >99 and <1?

The table lists grouped percentile thresholds (e.g., >99 and <1) and provides the corresponding range of scaled scores for each threshold.

Sep 15, 2026

Uploaded by supergirl