Respuesta :

From the data set given we shall evaluate the specifics as follows:
27, 33, 34, 35, 37, 39, 40, 41, 54, 84,75,90,87,99,91,85,88,76,92,94

First quartile:
Q1=34

Median
Median=(84+75)/2=79.5

Third Quartile
Q3=76

Interquartile range:
Q3-Q1
=76-34
=42