5. Read problem 8.27 in your textbook. Three methods of identifying influential observations could be: 72 If an observation has a residual larger than 3s (in absolute value) 2(k+1) The leverage of an observation could be high-greater than 7; > Cook's distance test. if D> Fy=k+1, [14k+1)] The methods will not always detect the same influential observations. For example, leverage statistics will not detect outliers that result from coding errors in the dependent variable. Choose and mark the correct answer a) b) NO only 1 and 2 are rele ant only 1 and 3 are relevant all are relevant only 2 and 3 are relevant dy 5. Read problem 8.27 in your textbook. Three methods of identifying influential observations could be: 72 If an observation has a residual larger than 3s (in absolute value) 2(k+1) The leverage of an observation could be high-greater than 7; > Cook's distance test. if D> Fy=k+1, [14k+1)] The methods will not always detect the same influential observations. For example, leverage statistics will not detect outliers that result from coding errors in the dependent variable. Choose and mark the correct answer a) b) NO only 1 and 2 are rele ant only 1 and 3 are relevant all are relevant only 2 and 3 are relevant dy