leo wants to determine the average number of texts middle school students send in a day. since all middle…

leo wants to determine the average number of texts middle school students send in a day. since all middle school students are enrolled in history, he randomly surveyed 4 students from each of mr. barness eighth - grade history classes. ms. lopez and mrs. frank also teach eighth - grade history. what should leo do to ensure his sample is representative of all middle school students? he should take the sample as is because he randomly surveyed students in each of mr. barness classes. he should also take a sample from ms. lopezs and mrs. franks classes so that each student has the same chance of being chosen. he should also take a sample from each of the other history classes in all of the other grades in the middle school. he should survey all the students in all the history classes to make sure he collects enough data.

leo wants to determine the average number of texts middle school students send in a day. since all middle school students are enrolled in history, he randomly surveyed 4 students from each of mr. barness eighth - grade history classes. ms. lopez and mrs. frank also teach eighth - grade history. what should leo do to ensure his sample is representative of all middle school students? he should take the sample as is because he randomly surveyed students in each of mr. barness classes. he should also take a sample from ms. lopezs and mrs. franks classes so that each student has the same chance of being chosen. he should also take a sample from each of the other history classes in all of the other grades in the middle school. he should survey all the students in all the history classes to make sure he collects enough data.

Answer

Brief Explanations:

To have a representative sample of all middle - school students, the sample should cover students from different teachers and different grades as middle - school has multiple grades. Sampling only from one teacher's classes in one grade is not representative. Sampling all students is not necessary for an average estimate. Sampling from all teachers in the same grade is better but still lacks grade - level diversity. Sampling from all grades' history classes gives a more representative sample.

Answer:

He should also take a sample from each of the other history classes in all of the other grades in the middle school.