# Math225 Week 1 Assignment: Comparing Sampling Methods

Question

In reference to different sampling methods, is the following statement true or false?
Systematic sampling includes the steps: identify individuals of the population that are easily accessible; obtain data from these individuals.

Question

When is using a simple random sample appropriate?

Question

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.

Question

When considering different sampling methods, cluster sampling includes the steps: _______.

Question

In reference to different sampling methods, is the following statement true or false? Cluster sampling includes the steps: divide the population into groups; use simple random sampling to identify a proportionate number of individuals from each group.

Question

In order to study the mean pulse rate of people in his town, Jerry samples the population by dividing the residents by regions and randomly selecting 12 of the regions. He collects data from all residents in the selected regions. Which type of sampling is used?

Question

An executive for a large national restaurant chain with multiple locations in each of 513 counties wants to personally sample the cleanliness of the chain’s restaurants throughout the country by visiting restaurants. The executive wants a good-quality sample but wants to minimize travel time and expenses. Which of the following sampling methods would be most appropriate?

Question

When is stratified sampling appropriate?

# Solution:

In reference to different sampling methods, is the following statement true or false?
Systematic sampling includes the steps: identify individuals of the population that are easily accessible; obtain data from these individuals.