4.2

Cost per serving (in cents) for six high-fiber cereals rated very good and for nine high-fiber cereals rated good are shown below.

Cereals Rated Very Good

44 48 62 42 16 79

Cereals Rated Good

72 30 51 51 69 41 48 26 56

Compute thelower quartile,median,upper quartile,andinterquartile rangefor the cereals rated very good.

lower quartile=

median=

supper quartile=

interquartile range=

Compute thelower quartile,median,upper quartile,andinterquartile rangefor the cereals rated good.

lower quartile=

median=

upper quartile=

interquartile range=