Question 1:-Listed below are brain sizes (in cm3) and Wechsler IQ scores of subjects (based on data from StatLib and "Brain Size, Head Size, and Intelligence Quotient in Monozygotic Twins," by Tramo, et al., Neurology, Vol. 50, No. 5). Is there sufficient evidence to conclude that there is a linear correlation between brain size and IQ score? Does it appear that people with larger brains are more intelligent?

Brain Size	965	1029	1030	1285	1049	1077	1037	1068	1176	1105
IQ	90	85	86	102	103	97	124	125	102	114

Question 2:-a) Find the regression equation, letting the first variable be the predictor (x) variable.

(b) Find the best predicted IQ score of someone with a brain size of 1,275 cm3. [3 marks]

Brain Size	965	1029	1030	1285	1049	1077	1037	1068	1176	1105
IQ	90	85	86	102	103	97	124	125	102	114

Question 3:-Full written solution from Handout 3.3 question #2. Choose to complete one of the following: CASE 1 OR CASE 2.