Top ten dog breeds
The following tables give the rank and number of registered dogs for the top ten breeds for 1995 and their 2006 data.
(a) Form a matrix for the 1995 data and a matrix for the 2006 data.
(b) Use a matrix operation to find the change from 1995 to 2006 in rank for each breed and in registration numbers for each breed.
(c) Which breed had the greatest improvement in rank?
(d) Which breed had the largest increase in the number of registrations?
1995
Breed
Rank
Number Registered
Labrador retriever
1
132,051
rottweiler
2
93,656
German shepherd
3
76,088
Golden retriever
4
64,107
Beagle
5
57,063
poodle
6
54,784
Cocker spaniel
7
48,065
Dachshund
8
44,680
pomeranian
9
37,894
Yorkshire terrier
10
36,881
2006
Breed
Rank
Number Registered
Labrador retriever
1
123,760
rottweiler
17
14,709
German shepherd
3
43,575
Golden retriever
4
42,962
Beagle
5
39,484
poodle
8
29,939
Cocker spaniel
16
14,790
Dachshund
6
36,033
pomeranian
14
18,218
Yorkshire terrier
2
48,346