what is the interquartile range of the data ?
100, 120, 130, 188, 196, 220, 265, 300
a ( 200
b ( 242.5
c ( 145
d ( 117.5
100, 120, 130, 188, 196, 220, 265, 300
a ( 200
b ( 242.5
c ( 145
d ( 117.5