The data in Table 8.4 are a subset of the data obtained by Sylvester (1969) in a study concerned with the anatomical and pathological status of the corticespinal and somatosensory tracts and parietal lobes of patients who had had cerebral palsy. Among other things, he was interested in the relationship between brain weights and large fiber (>7.5 μ in diameter) counts in the medullary pyramid. Table 8.4 gives the mean brain weights (g) and medullary pyramid large fiber counts for 11 cerebral palsy subjects. Test the hypothesis of independence versus the general alternative that brain weight and large fiber count in the medullary pyramid are correlated in subjects who have had cerebral palsy.
