Question

The National Highway Traffic Safety Administration reports the number of

traffic fatalities for 2011, 2012 and 2013 for various types of a passenger cars.

             Subcompact Compact   Intermediate Full-Size Other   Total

2011      1352              3801         4066              2647         148     12014

2012     1360              3866         4088              2860         187      12361

2013     1206              3610          4083              2830         248     11977

Total     3918             11277         12237           8337          583     36352

(a)   Draw a bar chart for the distribution of year (total),

(b)   Draw a pie chart for the distribution of year (total),

(c)   What does the bar chart tell you that the pie chart does not?

(d)   What does the pie chart tell you that the bar chart does not?

Answer 1

a) Draw a bar chart for the distribution of year (total)

(b) Draw a pie chart for the distribution of year (total),

(c) What does the bar chart tell you that the pie chart does not?

The bar chart excels at showing discrete data while comparing one data-point vs. another.

(d) What does the pie chart tell you that the bar chart does not?

The pie chart excels at showing how various parts make up a whole.