Chapter 2, Problem 1E

To determine

Find the relative frequency distribution for the car type data.

Answer to Problem 1E

The relative frequency distribution is:

Automobile fatalities	Relative frequency
Subcompact and Mini	0.2658
Compact	0.2084
Intermediate	0.3006
Full	0.2069
Unknown	0.0183
Total	1.00

Explanation of Solution

Given info:

The table represents the different car types with corresponding frequencies of killed passengers in accident in 2011.

Calculation:

Relative frequency:

The general formula for the relative frequency is,

$\text{Relative}\text{Frequency = }\frac{\text{Frequency}}{\text{Total frequency}}$

The relative frequencies for the remaining types of cars are obtained below:

Automobile fatalities	Frequency	Relative frequency
Subcompact and Mini	3,610	$\frac{3,610}{13,581}=0.2658$
Compact	2,830	$\frac{2,830}{13,581}=0.2084$
Intermediate	4,083	$\frac{4,083}{13,581}=0.3006$
Full	2,810	$\frac{2,810}{13,581}=0.2069$
Unknown	248	$\frac{248}{13,581}=0.0183$
Total	13,581	1.00