MTH155
Part 1:
a) Cracker Barrel conducted an observational study. Categorical data collected
included Restaurant Number and Geographic Region. Quantitative data
collected was Annual Revenue, Average Cost of Gasoline, Miles from Interstate,
Square Footage and Annual Increase in Revenue.
Part 2:
b)
Variable: Stem & Leaf Plot - Average Cost of Gasoline
Decimal point is at the colon.
Leaf unit = 0.1
1
2
2
3
:
:
:
:
7778888889999999999999999999
000000000000000000111111111111122222222233333333334444444444
55566666666666667777777777888899999999
000000000011111111223334
c) I feel the Stem and Leaf Plot is a better visual for the data collected because it
shows the raw data.
d) The restaurants are not evenly spread over the country. The pie chart provides a
better visual to compare how many restaurants are located in each region. See
bar chart and pie chart below: