Which of the following is a random sample of a college student body? Randomly selecting students who have taken a psychology or sociology course Every fifth person coming out of the Campus Center between 8:30 a.m. and 10:00 a.m. Every 20th person in the student directory A person whose registration number corresponded to the number picked from a table of random numbers
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Step 1: A random sample should be representative of the entire population, in this case, the college student body. Show more…
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QUESTION 2 [8 MARKS] A psychologist is studying the sleep patterns of the 3960 students at her university. She decides to start by asking a random sample of 30 students how many hours of sleep they get weekday nights. Identify the type of sample in the following survey methods. 2.1 The psychologist assigns each student a number from 1 to 3960. She selects the sample by randomly choosing one of the first 132 numbers and every 132nd number thereafter. [2] 2.2 The psychologist assigns each student a number from 0001 to 3960 and uses a computer to randomly generate a list of 30 numbers to select the students for the sample. [2] 2.3 Students are listed by the location they live in. The psychologist randomly selects six locations and then randomly selects five students from each one. [2] 2.4 An equal proportion of students are randomly selected from each degree programme. [2]
Shubham S.
Identify which of these types of sampling is used: random, systematic, convenience, stratified, or cluster. In a study of college programs, 820 students are randomly selected from those majoring in communications, 1463 students are randomly selected from those majoring in business, and 760 students are randomly selected from those majoring in history.
Introduction to Statistics
Collecting Sample Data
Sampling A\&M students For each scenario, identify the kind of sample used by the university administrators from Exercise 1: a) Select several dormitories at random and contact everyone living in the selected dorms. b) Using a computer-based list of registered students, contact 200 freshmen, 200 sophomores, 200 juniors, and 200 seniors selected at random from each class. c) Using a computer-based alphabetical list of registered students, select one of the first 25 on the list by random and then contact the student whose name is 50 names later, and then every 50 names beyond that.
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