Write a division expression that represents each model.

Median=120

Lower quartile=112

upper quartile=140

interquartile range=28

Step-by-step explanation:

We find the median of a data by firstly arranging our data into ascending or descending order and then finding it's middle term.

on aaranging our data into ascending order we have:

104  109  115  118  120  135  139  141  148

hence we could clearly see that the middle term is 120.

Hence, Median=120.

the lower quartile is the median of a lower half of the data i.e. median of:

104   109   115   118

on calculating it's median we have lower quartile=112.

similarly upper quartile is the median of upper half of the data i.e. median of:

135   139   141   148

on calculating it's median we have upper quartile=140.

now interquartile range is the difference between upper quartile and lower quartile.

interquartile range=140-112

                               =28

Hence, interquartile range=28.