Chapter 1.1, Problem 9E

(a)

To determine

To find: the percent of vehicles which have colours other than the given.

Answer to Problem 9E

There are 100% of vehicles had colours other than those listed.

Explanation of Solution

Given:

  

Calculation:

There are no vehicles colours other than those listed as the total percentage listed is 100%.

Sl. No.	Colour	Percent of Vehicles
1	White	20
2	Black	17
3	Silver	17
4	Blue	13
5	Grey	12
6	Red	11
7	Beige/Brown	5
8	Green	3
9	Yellow/Golden	2
Total	100

Conclusion:

Hence,there are 100% of vehicles had colours other than those listed.

(b)

To determine

To show: the given data in a bar graph.

Answer to Problem 9E

The data below is displayed in a bar graph format.

  

Explanation of Solution

Calculation:

Bar graph is used to display the distribution of categorical variables more vividly. It represents each category as a bar. The height of the bar shows the category count or percentage.

The data is displayed in a bar graph format below:

  

From the above graph can say that white is the most popular colour followed by black and silver.

Conclusion:

Therefore, the data above is displayed in a bar graph format.

(c)

To determine

To explain: whether the given data can be used to make a pie chart or not

Answer to Problem 9E

This is the pie chart of the given data.

  

Explanation of Solution

Calculation:

For the given data, it is appropriate to use “pie” chart. Here the given colours explain the 100% of vehicles, means no colour other than those listed are there thus we can draw a pie chart with the data.

  

Conclusion:

Therefore, the given data can be displayed as pie chart.