An ecologist wanted to know how many plants lived in a particular prairie. Instead of counting all the plants, the ecologist used a sample area. The ecologist placed a grid that was ten meters by ten meters in a random location in the prairie and counted the number of individual plants of the various species. Data were collected and recorded. Answer these:

Describe an observation from the prairie sample study.

Describe an inference from the prairie sample study.

Describe a difference between any observations and any inference