Mr. Tran recorded the number of pets owned by each of the students in his class. He found that $13$13 people had no pets, $17$17 people had one pet, $2$2 people had two pets and $6$6 people had three pets.
Write Mr. Tran's results in the frequency table below.
|Number of Pets||Frequency|
Construct, interpret and compare a range of data displays, including side-by-side column graphs for two categorical variables