5. Consider the six numbers: 3, 5, 8, 15, 20, 21, 24 (a) Compute the mean and median m of the six numbers. (b) Apply the logarithm to the data (in R, use command in ()), and then compute the mean ' and median m' of the transformed data. (c) Is ln(x) = x'? Is ln(m) = m'?