Question

a teacher asks students to list the math lessons they learned on nine random school days in the past month. she evaluates the students performance on this assignment to get a general picture of how well students are taking notes. this teachers method is an example of systematic random sampling. simple random sampling. convenience sampling. stratified sampling.

Explanation:

1. Systematic random sampling: Involves selecting elements at regular intervals from an ordered population. Here, no such interval - based selection is done.
2. Simple random sampling: Each member of the population has an equal chance of being selected. The teacher randomly selects nine school days, and each school day has an equal probability of being chosen.
3. Convenience sampling: Selects elements that are easily accessible. This is not the case as the teacher is not choosing based on convenience.
4. Stratified sampling: Divides the population into subgroups (strata) and samples from each stratum. There are no strata involved here.

Answer:

simple random sampling.