Q.

Suppose you have fitted a complex regression model on a dataset. Now, you are using Ridge regression with tuning parameter lambda to reduce its complexity. Choose the option(s) below which describes relationship of bias and variance with lambda.

A. In case of very large lambda; bias is low, variance is low
B. In case of very large lambda; bias is low, variance is high
C. In case of very large lambda; bias is high, variance is low
D. In case of very large lambda; bias is high, variance is high
Answer» C. In case of very large lambda; bias is high, variance is low
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