Macmillan Learning The scatterplot shows the age in months at which a child begins to Gesell Adaptive Score for each of 21

Question

Macmillan Learning The scatterplot shows the age in months at which a child begins to Gesell Adaptive Score for each of 21 children 2 sets of 2 children happen to have the same values Gesell Adaptive Score 120 110 100 90 80 70 60 50 L 5 10 15 20 25 30 35 40 45 Age at first word months One child clearly falls outside of the overall pattern of the scatterplot and therefore might be an outlier The possible outlier is the child with O age 26 months and score 71 age 17 months and score 121 age 7 months and score 113 O age 42 months and score 57 1 These data were originally collected by L M Linde of UCLA but were first published by M R Mickey O J Dunn and V Clark Note on the use of stepwise regression in detecting outliers Computers and biomedical Research 1 1967 pp 105 111 The data have been used by several authors These are taken from N R Draper and J A John Influential observations and outliers in regression Technometires 23 1981 pp 21 26

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