Dr. Patel works at the IUPUI Institutional Research and Decision Support center and wants to know what factors impact graduation rates. He decides to administer a survey to a sample of students. He first gets a list of all students, separated into groups based on how whether they are working full time, part time, or not at all. Then he randomly samples 100 students from each group, even though there are fewer students who work full time in comparison to the other groups. What kind of sampling is he doing?Group of answer choicescluster samplingstratified random sampling with oversamplingstratified random sampling with proportionate samplingsimple random sampling

Professor Romano looks at ways to improve student learning. She wants to recruit participants at high schools in town to see how the use of repeated quizzing may boost performance on later exams. Because she works with the local public school system, they are willing to let her have access to any schools she wants. She randomly selects 5 schools, and within each school, she randomly selects 5 classes to participate in her study. What kind of sampling is this?Group of answer choicescluster samplingstratified random samplingsimple random samplingconvenience sampling

A researcher wants to study the eating habits of college students. They assign each student in the college a unique number and use a random number generator to select a sample of 100 students.What kind of sampling method is being used?Group of answer choicesStratified Random SamplingCluster SamplingSystematic SamplingRandom Sampling

Laurence invites passing students to participate in a brief survey about their study habits without following any strict criteria for selection. What type of sampling method is being employed in this situation?*1 pointA. Cluster samplingB. Purposive samplingC. Quota samplingD. Convenience sampling

Aisha has to collect survey data for her class. She asks her friends and family members to participate, and she posts on social media to try to get people to participate. What kind of sampling is this?Group of answer choicescluster samplingself-selection samplingconvenience samplingquota sampling

A student council surveys 100 students by taking random samples of  25 freshmen, 25 sophomores, 25 juniors, and 25 seniors.*1 pointSimple randomStratified randomCluster samplingSystematic sampling