The table below lists brain sizes (in cm') and Wechsler IQ scores of subjects (based on data from "Brain Size, Head Size, and Intelligence Quotient in Monozygotic Twins", by Tramo et al., Neurology, Vol. 50, No. 5). Brain Size 965 1029 1030 1285 1049 1077 1037 1068 1176 1105 IQ Score 90 85 86 102 103 97 124 125 102 114 1. Use your calculator to compute the best-fit line. 2. How well does the best-fit line actually fit the points in the scatterplot? 3. Briefly discuss the strength of the correlation. Computer and r. Based on your value for r, identify how much of the variation in the variable can be accounted for by the best-fit line. 4. Identify any outliers on the scatterplot, and discuss their effects on the strength of the correlation and on the best-fit line. 5. Does the best-fit line appear to provide reasonably reliable predictions within the range of the given data? Explain