02-13-2012, 01:54 AM
In the PISA,
mean score = 500 = 100 IQ
SD = 100 = 15 IQ
TN and HP come in at 350
which is 1.5 SD below norm
TN, HP, IQ = 100 - 1.5 x 15 = 77 IQ
mean score = 500 = 100 IQ
SD = 100 = 15 IQ
TN and HP come in at 350
which is 1.5 SD below norm
TN, HP, IQ = 100 - 1.5 x 15 = 77 IQ