Shown here are the top seven companies from the construction, farm machinery industry in the United States and their respective revenue ($ billions).

Company		Revenue
Caterpillar		38.5
Deere		26.6
Paccar		17.0
Navistar International		8.1
AGCO		7.4
Oshkosh		6.3
Terex		5.8

(a) Construct a pie chart for these data.

(a) Construct a pie chart for these data.

(A)
(B)
(C)
(D)

select an option (A)(B)(C)(D)

(b) Construct a bar chart for these data.

(A)
(B)
(C)
(D)

select an option (A)(B)(C)(D)

(c) Compare and contrast the displays of the pie chart and the bar chart. This problem points out the advantage of the select a chart pie chartbar chart over the select a chart bar chartpie chart. In the select a chart bar chartpie chart it is more evident that the Navistar sales are greater than AGCO which are greater than Oshkosh which are greater than Terex. In the select a chart bar chartpie chart, without the labels, differentiating between these four company revenues would be difficult.