Question

Disc dogs Here is a list of the breeds of dogs that won the World Canine Disc Championships from 1975 through 2016. Make a relative frequency bar graph for these data. Describe what you see.

Short answer

Only three dog breeds, Australian shepherd, Mixed breed, and Border collie, won more than 80% of the championships.

Step-by-step solution

Part (a) Step 1. Given information.

The given data is:

Step 2. Find the relative frequency of each breed of dog.

Dog Breed	No. of Dogs	Relative Frequency
Other purebred	2	$\frac{2}{42}=0.048\mathrm{or}4.8\%$
Whippet	3	$\frac{3}{42}=0.071\mathrm{or}7.1\%$
Labrador retriever	3	$\frac{3}{42}=0.071\mathrm{or}7.1\%$
Australian shepherd	9	$\frac{9}{42}=0.214\mathrm{or}21.4\%$
Mixed breed	12	$\frac{12}{42}=0.286\mathrm{or}28.6\%$
Border collie	13	$\frac{13}{42}=0.31\mathrm{or}31\%$
Total	42	$1\mathrm{or}100\%$

Step 3. Construct a frequency bar graph.

Only three dog breeds, the Australian shepherd, mixed breed, and Border collie, won more than 80% of the championships.

The other three breeds only managed to win about 20% of the tournaments.