4. In regression, the residuals are which of the following?
(a) Those factors unexplained by the data
(b) The difference between the observed responses ( y) and the values predicted
by the regression line ( 𝑦̂ ).
(c) Those data points which were recorded after the formal investigation was
completed
(d) Possible models unexplored by the investigator
(e) None of the above

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@Michele_Laino

so C

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