The file read.dat contains reading data collected by L. Doi. Of interest is predicting WWISST2, a word identification score (stored in column 8), using TAAST1, a measure of phonological awareness...

The file read.dat contains reading data collected by L. Doi. Of interest is predicting WWISST2, a word identification score (stored in column 8), using TAAST1, a measure of phonological awareness stored in column 2, and SBT1 (stored in column 3), another measure of phonological awareness. Compare the OLS estimates to the estimates given by βˆ
_m, βˆ
_ad, and βˆ
_mid.