Sampling Methods and Their Characteristics

The video tutorial explains how to determine a researcher's sampling method, focusing on simple random and systematic samples. It covers the differences between a population and a sample, emphasizing the need for a representative sample. The tutorial provides examples and discusses the advantages and disadvantages of each sampling method. It concludes with practical applications of these methods to determine the percentage of students with part-time jobs.

What is the main goal of selecting a representative sample?

• To ensure the sample is larger than the population

• To make sure the sample has the same characteristics as the population

• To select only the most convenient members of the population

• To choose a sample that is completely different from the population

Which of the following is a characteristic of a simple random sample?

• Only the first few members of the population are selected

• The sample is chosen based on convenience

• The sample is selected based on specific characteristics

• Every member of the population has an equal chance of being selected

What is a disadvantage of using a simple random sample?

• It is the most cost-effective method

• It is the fastest method of sampling

• It requires a complete list of the population

• It is always representative of the population

In systematic sampling, how is the sample selected?

• By selecting members with specific characteristics

• Every k-th member from an ordered list

• Randomly from a hat

• Based on the first few members of the population

What is an advantage of systematic sampling?

• It does not require a complete list of the population

• It always provides a representative sample

• It is the most accurate method of sampling

• It is quick and easy when the population is ordered

Which of the following is a potential issue with systematic sampling?

• It can omit parts of the population if not ordered correctly

• It is always representative of the population

• It requires a random number generator

• It is the most time-consuming method

How can you determine the percentage of students with part-time jobs using a simple random sample?

• Select every 10th student from a list

• Put all student names in a hat and draw randomly

• Choose students based on their grades

• Select students who volunteer for the survey

What is required to perform systematic sampling in a school setting?

• A list of students who have part-time jobs

• A list of students ordered by height

• A random number generator

• A complete list of the school's population

Which sampling method would be more feasible for a large population?

• Judgmental sampling

• Systematic sampling

• Convenience sampling

• Simple random sampling

What is a key factor in deciding between simple random and systematic sampling?

• The time of day the sample is taken

• The manner in which the sample is generated

• The size of the sample

• The color of the sample