Table 4.

Transformation of WRUED-WIS raw scores to interval-level scores on a logit scale summed

Summed Score	Logit	Interval
0	–4.493	0.0
1	–3.47	2.3
2	–2.736	4.0
3	–2.21	5.2
4	–1.785	6.2
5	–1.42	7.0
6	–1.091	7.7
7	–0.788	8.4
8	–0.503	9.1
9	–0.23	9.7
10	0.035	10.3
11	0.299	10.9
12	0.564	11.5
13	0.838	12.1
14	1.126	12.8
15	1.438	13.5
16	1.787	14.3
17	2.192	15.2
18	2.691	16.3
19	3.372	17.9
20	4.303	20.0