Question

what is the sample?
○ all the people in the city
○ all the people who live on the block
○ all the people who live on the block and are home that day

Explanation:

In statistics (a subfield of Mathematics), a sample is a subset of the population that is actually observed or studied. Here, the population might be people on the block, but the sample would be those on the block and home that day (as they are the ones likely surveyed/studied). The first option is a larger population (city), the second is the population of the block, while the third is the sample (those available/studied from the block).

Answer:

C. all the people who live on the block and are home that day