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