Final answer:
The study uses systematic sampling where the first house is randomly selected and then every eighth house is surveyed. The age and number of visits per week are quantitative discrete data, while the duration of park use represents quantitative continuous data.
Step-by-step explanation:
The sampling method described in the study of San Jose residents using a local park is known as systematic sampling. In systematic sampling, a starting point is chosen at random, and thereafter selections are made at a regular interval, which in this case is every eighth house.
Regarding the types of data obtained from the survey questions:
- Age would provide quantitative discrete data, as it is counted in whole numbers.
- The number of times per week residents visit the park is also quantitative discrete data because it involves counting occurrences.
- The duration (amount of time) spent at the park would yield quantitative continuous data since it can be measured to any desired level of precision and may include fractions of time units.