MATH 225N MATHWeek 1 Assignment Comparing Sampling Methods Q and A graded A+

MATH 225N MATHWeek 1 Assignment Comparing Sampling Methods Q and A.




MATH 225N MATHWeek 1 Assignment Comparing Sampling Methods Q and A.




Week 1 Assignment: Comparing Sampling Methods Q and A


1. A television station plans to send a crew to a polling center on an election day. Because they do
not have time to interview each individual voter, they decide to count voters leaving the polling
location and ask every 20th voter for an interview. What type of sampling is this?


Select the correct answer below:


Simple random sampling

Cluster sampling

Stratified Sampling

Systematic sampling

Convenience sampling


2. In order to study the shoe sizes of people in his town, Billy samples the population by dividing
the residents by age and randomly selecting a proportionate number of residents from each
age group. Which type of sampling is used?


Select the correct answer below:


Systematic sampling

Stratified sampling

Convenience sampling

,MATH 225N MATHWeek 1 Assignment Comparing Sampling Methods Q and A.


Cluster sampling



3. The management of a large airline wants to estimate the average time after takeoff taken before
the crew begins serving snacks and beverages on their flights. Assuming that management has
easy access to all of the information that would be required to select flights by each proposed
method, which of the following would be reasonable methods of stratified sampling? Select all
that apply.


For each day of the week, randomly select 5% of all flights that depart on that day of the week.