Identify which type of sampling is used: random, stratified, cluster, convenienc

Question

Identify which type of sampling is used: random, stratified, cluster, convenience, voluntary response, or systematic.

a. A local business man attends a community event highlighting local businesses and asks attendees how they feel about one of his new products.

b. A large company drug tests its employees once a month. It is too expensive to test all the employees so the company assigns a number to each employee and has a computer randomly generate 15 numbers each month. The numbers generated by the computer are used to select the employees who will be drug tested that month.

c. After dining at a restaurant, the waitress gives you a survey card for you to rate the food quality and service.

d. The mayor of a city randomly chooses 4 of the 20 wards in her city and surveys all the voters in those selected wards.

e. In order to gauge how voters feel about constructing a new high school on the west side of town, the school board surveys 75 voters from each of the 15 precincts.

f. Every third car in a police DUI checkpoint is stopped.

g. So that a university can assess undergraduate student satisfaction, undergraduate syudents are grouped according to classification -- freshman, sophomore, junior, and senior. Two of the 4 groups are chosen and all the students in those chosen groups are surveyed.

Explanation / Answer

a) convenience ; as sample is not random

b) random

c) voluntary response

d)  cluster

e)  cluster

f) systematic

g) stratified

Related Questions

Navigate

• Browse (All)
• Browse I
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.