Studies have linked brain size in infants and

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16. Studies have linked brain size in infants and toddlers to a number of future ailments, including autism. One study looked at the brain sizes of 30 autistic boys and 12 non-autistic boys (control) who all had received an MRI scan as toddlers. Their whole-brain volumes in ml are summarized in the Minitab output below. -------------------------------------------------------------------------------------------------------------- Descriptive Statistics: Autistic, Control Variable N Mean SE Mean StDev Minimum Q1 Median Q3 Autistic 30 1297.6 16.1 88.4 1128.0 1229.8 1300.0 1355.3 Control 12 1179.3 20.4 70.7 1040.0 1119.5 1187.0 1224.3 -------------------------------------------------------------------------------------------------------------- Do the data give significant evidence that, on average, the mean brain volume of autistic boys is different from that of non-autistic boys during the toddler years? Use . α œ Þ!"
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  • Fall '10
  • CHILDS

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