Perform the k-NN using k = 1, 2, and 3. For each case, explain the SAS output and give interpretation(s). Which case (k = 1, 2, or 3) provides the best model? Explain why using the output from part c.
a. k = 1 provides the best model because it has the highest accuracy
b. k = 2 provides the best model because it has the lowest bias
c. k = 3 provides the best model because it has the lowest variance
d. k = 3 provides the best model because it balances bias and variance effectively