Mara believes that her professor's strict class attendance policy indicates that he has an overcontrolling personality, without considering that the policy is good is necessary because of the limited number of class sessions in a course that meets only once a week. Her belief best illustrates

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