Question

Using the following data on credit scores [634, 635, 598, 511, 579, 585, 659, 412, 691, 575, 400], find the following interval estimates for a mean or median using a 95% confidence.
a. Parametric
b. Robust
c. Nonparametric - Walsh Averages

d. Nonparametric - median with SAS (use code if possible)

e. Bootstrap
f. Compare the solutions. Which one do you think is best and why? May need a computer output of some sort (if possible).

g. Construct a 95% confidence interval for sigma, interpret, and caveat if necessary. (with SAS if possible)

Be sure to interpret please

Answer 1