Calculate the 20% mean of this sample data list.

Question

Calculate the 20% mean of this sample data list.

{ 13, 20, 13, 17, 14, 20, 19, 19, 19, 21, 14 }

Trimmed Mean =
three decimals

Answer 1

remove the lowest 20% and highest 20% of the data, which is lowest two and highest two. Then compute the mean of the remaining data.