The mode is the value that appears most frequently in a data set. In the life spans of the farm animals provided, the life spans are:
- Chicken: 7 years
- Duck: 10 years
- Horse: 22 years
- Pig: 10 years
- Sheep: 12 years
- Cow: 10 years
- Goat: 12 years
From the life spans listed, the number of occurrences for each lifespan is:
- 7 years: 1 time
- 10 years: 3 times (Duck, Pig, Cow)
- 12 years: 2 times (Sheep, Goat)
- 22 years: 1 time
The only lifespan that occurs most frequently (3 times) is 10 years.
So, the mode of the life spans of the farm animals is 10 years.