anong bansa ang paggamit ng cellphone sa lugar na ito ay may pakinabang at nakakatulong dahil sa transaksiyon na nagagawa ng mga mangingisda at

How can congress clarify parts of the constitution that are unclear?

What effect did increased automobile production have on other industries

Donald is studying the eating habits of all students attending his school. he samples the population by dividing the students into groups by grade level and randomly selecting a proportionate number of students from each group. he then collects data from the sample. which type of sampling is used? select the correct answer below: systematic sampling convenience sampling stratified sampling cluster sampling