4. Pronto Pizza. Recently a national chain pizza service set up near Pronto Pizz

Question

4. Pronto Pizza. Recently a national chain pizza service set up near Pronto Pizza, a family owned business. To compete, Pronto Pizza is considering offering a 30 minute delivery guarantee. To get more information about the current service, a sample of deliveries during one month was taken, totaling 240 deliveries in the sample (8 orders per day for 30 days). Data on the Prep Time (time to prepare the pizza), Wait Time (time between when the pizza is done cooking to when a driver picks it up), and Travel Time (time from the store to a customer's home) were

Explanation / Answer

Solutiong:

Q1=0.5125

Q2=1.255

Q3=3.26

max=21.66

Solutiond:

range=max-min

=21.66-0.02

=21.64

range=21.64

IQR=Q3-Q1=

=3.26-0.5125

IQR =2.7475

values below Q1-1.5IQR=0.5125-1.5(2.7475)= -3.60875 are outliers

Values above Q3-1.5IQR=3.26+1.5(2.7475)= 7.38125 are outliers

Solutionh:

mean> median

2.53>1.26

postively skewed

Skewed Right Distribution.

median And IQR reflect center and variability.

Why median is median is not affected by outliers.

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