Pregunta
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A study is done to determine the average tuition that San Jose State undergraduate
students pay per semester. Each student in the following samples is asked how much
tuition he or she paid for the Fall semester. What is the type of sampling in each case?
a) A sample of 100 undergraduate San Jose State students is taken by organizing the
students’ names by classification (freshman, sophomore, junior, or senior), and then
selecting 25 students from each.

Ask by Stanley Kelly. in Ghana
Jan 27,2025

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They used stratified sampling by dividing the students into classifications and selecting an equal number from each group.

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This sampling method is known as stratified sampling. By organizing students by classification and then selecting an equal number from each group, the researcher ensures that the sample accurately reflects the diversity of tuition rates across different levels of students. This approach is beneficial for gaining insights into how tuition may vary among different classifications.
b) A sample of 100 undergraduate San Jose State students is taken by randomly selecting students from the entire student population without regard to classification.
This sampling technique is called simple random sampling. By selecting students without considering their classification, each student has an equal chance of being chosen, which helps to minimize bias and enhances the generalizability of the results. This method is particularly effective in capturing a representative cross-section of the entire undergraduate population.

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