Question: For the predictor X2 in Table 14.2, if the R function runYhat is used to estimate the typical value of Y given that X2 =

For the predictor X2 in Table 14.2, if the R function runYhat is used to estimate the typical value of Y given that X2 = 250, based on a 20% trimmed mean, the function returns NA. Explain why this occurs.

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