Math 227 Test #1 Write your work neatly. You may use TI calculator and formula s
ID: 3073954 • Letter: M
Question
Math 227 Test #1 Write your work neatly. You may use TI calculator and formula sh Name: 1. (6 point) Identify which of these types of sampling is used: random, systematic, stratifi convenience. An instructor in a large lecture course of 300 students would like to get a student sample. He a. takes a random sample of three of the 15 lab sessions, and selects all the students from those three sections. b. An instructor in a large lecture course of 300 students would like to get a student sample. He divided the students into freshmen, sophomores, juniors, and seniors. Then he selects 10 students from each group. An instructor in a large lecture course of 300 students would like to get a student sample, and he selects every 10th name from the class roster. c.Explanation / Answer
a)
It is cluster sampling.
Each of the 15 lab sessions are cluster.
Reseacher randomly select 3 clusters and then all selects all students from these clusters.
b)
It is stratified sampling.
Each group is a stratum.
c)
It is systematic sampling.