In lesson app 1. 6, we asked, "have you ever noticed that


bags of chips seem to contain lots of air and not enough


chips?" here once again are data on the percent of air in


each of 14 popular brands of chips, along with a dotplot:


10


lesson app 1. 7


20


30


percent of air


40


agre
.


50


60


r/wilcox, statistics and probability with applications, 4e


brand


cape cod


cheetos


doritos


fritos


kettle brand


lays


lays baked


percent


of air


46


59


48


19


47


41


39


brand


popchips


pringles


ruffles


stacy's pita chips


sun chips


terra


tostitos scoops


percent


of air


45


28


50


50


41


1. find the range of the distribution.


2. calculate and interpret the standard deviation.


3. find the interquartile range. interpret this value.


4. the dotplot suggests that the bag of fritos chips, with only 19% of air, is a possible outlier.


recalculate the range, standard deviation, and iqr for the other 13 bags of chips. compare


these values with the ones you obtained in questions 1 through 3. explain why each result


makes sense.


can you help me