1 Lec Q - Sampling Methods and Objectives Quiz

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Which type of error arises from inaccuracies in the collection, recording, and processing of data?

Sampling error

Systematic error (correct)

Non-probability error

Random error

Which type of sampling method involves selecting participants based on ease of access?

Simple random sampling

Stratified sampling

Cluster sampling

Convenience sampling (correct)

Which type of sampling method allows for the generalization of results to the population?

Probability sampling (correct)

Stratified sampling

Purposive sampling

Snowball sampling

What is the difference between precision and accuracy?

Precision is a measure of the variability of the sample estimate, while accuracy is a measure of how close the sample estimate is to the true value. Signup and view all the answers

What type of error is the difference between the result of a sample and the true value of the population?

Sampling error Signup and view all the answers

What type of sampling method involves selecting participants based on referrals from existing participants?

Snowball sampling Signup and view all the answers

Which type of sampling method involves selecting participants based on judgment or expertise?

Purposive sampling Signup and view all the answers

What type of samples are cheaper but unable to generalize the results to the population?

Non-probability samples Signup and view all the answers

What type of sampling method involves dividing the population into subgroups and selecting participants from each subgroup?

Stratified sampling Signup and view all the answers

What type of sampling method involves selecting participants at regular intervals from an ordered list of the population?

Systematic sampling Signup and view all the answers

Which of the following is the definition of sampling unit?

The unit from which the sample will be selected Signup and view all the answers

What is the purpose of using sampling?

B & C Signup and view all the answers

What is the target population?

The population to which the investigator wishes to generalize Signup and view all the answers

What is the definition of response rate?

The percentage of people in the sample who actually participate in the study Signup and view all the answers

What is the definition of sampling frame?

The list of all sampling units in the target population Signup and view all the answers

What is the definition of inquiry unit?

The unit from which or about which data will be collected Signup and view all the answers

What is the main objective of sampling?

To select representatives of the entire population Signup and view all the answers

What is the definition of sample?

A subset of the population selected in such a way that it is representative of the target population Signup and view all the answers

What is the definition of sampling?

Procedure by which some members of a given population are selected as representatives of the entire population. Signup and view all the answers

Which sampling method is considered the most reliable of all sampling methods?

Simple Random Sample Signup and view all the answers

What is the disadvantage of using a Simple Random Sample in populations with a high degree of heterogeneity?

The sample results will have a low degree of precision Signup and view all the answers

Which sampling method involves selecting every nth element after randomly selecting the first element?

Systematic Random Sample Signup and view all the answers

What is the advantage of using a Systematic Random Sample over a Simple Random Sample?

A & C Signup and view all the answers

Which sampling method involves Sample that has members from each segment of the population?

Stratified Random Sample Signup and view all the answers

What is the disadvantage of using a Stratified Random Sample?

Difficulty in constructing the frame when stratum sizes are large Signup and view all the answers

Which sampling method involves selecting participants at regular intervals from an ordered list of the population?

Systematic Random Sample Signup and view all the answers

What is the disadvantage of using a Systematic Random Sample if there is periodicity in the sampled population?

The sample results will be biased Signup and view all the answers

What is the disadvantage of using Judgmental Sampling?

Selection bias may occur Signup and view all the answers

Which method of simple random selection involves preparing a frame, securing an ideal bowl, and selecting cards from the bowl without replacement?

Ideal Bowl Method Signup and view all the answers

What is the purpose of assigning a number to each member of the population in simple random sampling?

To create a sampling frame Signup and view all the answers

Which method of simple random selection involves using a list of numbers where the digits 0-9 are arranged in a random order to select the sample?

Tables of random numbers Signup and view all the answers

What is the difference between sampling with replacement and sampling without replacement?

Sampling with replacement allows selected units to be chosen again, while sampling without replacement does not Signup and view all the answers

Which of the following methods of simple random selection involves using a computer to generate random numbers for sample selection?

Computer generated random selection Signup and view all the answers

Which method of simple random selection involves selecting the sample by progressing along one or more adjacent rows of digits in a table of random numbers?

Tables of random numbers Signup and view all the answers

What is the purpose of thoroughly mixing the cards in the ideal bowl in the Ideal Bowl Method of simple random selection?

To ensure random selection of cards Signup and view all the answers

Which method of simple random selection involves selecting the sample by using a random number table?

A & D Signup and view all the answers

What is the purpose of using simple random sampling?

To ensure equal opportunity of selection Signup and view all the answers

What is the Advantage of the simple random sampling?

Selection procedures are simple Signup and view all the answers

What is the disadvantage of using a Simple Random Sample?

Difficulty in construction of frame particularly for large population Signup and view all the answers

Which method of simple random selection involves using an ideal bowl with a smooth inner surface and folded cards with serial numbers?

Ideal Bowl Method Signup and view all the answers

What is the Advantages of using Stratified Random sampling?

A & B Signup and view all the answers

What is the Methods of allocation of sample size?

All of the above Signup and view all the answers

Which type of sampling method involves dividing the population into groups and selecting a random sample from each group?

Stratified Random Sampling Signup and view all the answers

Which type of sampling method involves dividing the population into subgroups and selecting participants from each subgroup?

Stratified Random Sampling Signup and view all the answers

What is the purpose of using Cluster sampling?

To reduce travel by interviewing many respondents within the same geographic area Signup and view all the answers

What is the main objective of sampling?

To make inferences about a population based on a subset of the population Signup and view all the answers

Which type of error arises from inaccuracies in the collection, recording, and processing of data?

Non-sampling error Signup and view all the answers

Selecting a sampling method:

Resources available + All of the above Signup and view all the answers

Which type of sampling method allows for the generalization of results to the population?

Probability Samples Signup and view all the answers

What is the disadvantage of using Stratified Random Sampling?

Difficulty in constructing the frame when stratum sizes are large Signup and view all the answers

Which sampling method is used when no sampling frame is available?

Cluster Sampling Signup and view all the answers

What is a cluster in the context of Cluster Sampling?

A group of sampling units close to each other Signup and view all the answers

In Cluster Sampling, what is done if clusters are big and of equal size?

The sample is divided equally over selected clusters Signup and view all the answers

What is the main advantage of using Stratified Random Sampling?

A & B Signup and view all the answers

Which one of the following is under the Multi-stage Random Sample?

the selection of sample in stages and for each stage the construction of the frame for that particular stage is always an easy task Signup and view all the answers

What is the main disadvantage of using Cluster Sampling?

Lower precision compared to other probability samples Signup and view all the answers

What is the main advantage of using Proportional Allocation?

Allocation over strata proportional to stratum size Signup and view all the answers

1 Lec Q - Sampling Methods and Objectives Quiz

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Questions and Answers

Which type of error arises from inaccuracies in the collection, recording, and processing of data?

Which type of sampling method involves selecting participants based on ease of access?

Which type of sampling method allows for the generalization of results to the population?

What is the difference between precision and accuracy?

What type of error is the difference between the result of a sample and the true value of the population?

What type of sampling method involves selecting participants based on referrals from existing participants?

Which type of sampling method involves selecting participants based on judgment or expertise?

What type of samples are cheaper but unable to generalize the results to the population?

What type of sampling method involves dividing the population into subgroups and selecting participants from each subgroup?

What type of sampling method involves selecting participants at regular intervals from an ordered list of the population?

Which of the following is the definition of sampling unit?

What is the purpose of using sampling?

What is the target population?

What is the definition of response rate?

What is the definition of sampling frame?

What is the definition of inquiry unit?

What is the main objective of sampling?

What is the definition of sample?

What is the definition of sampling?

Which sampling method is considered the most reliable of all sampling methods?

What is the disadvantage of using a Simple Random Sample in populations with a high degree of heterogeneity?

Which sampling method involves selecting every nth element after randomly selecting the first element?

What is the advantage of using a Systematic Random Sample over a Simple Random Sample?

Which sampling method involves Sample that has members from each segment of the population?

What is the disadvantage of using a Stratified Random Sample?

Which sampling method involves selecting participants at regular intervals from an ordered list of the population?

What is the disadvantage of using a Systematic Random Sample if there is periodicity in the sampled population?

What is the disadvantage of using Judgmental Sampling?

Which method of simple random selection involves preparing a frame, securing an ideal bowl, and selecting cards from the bowl without replacement?

What is the purpose of assigning a number to each member of the population in simple random sampling?

Which method of simple random selection involves using a list of numbers where the digits 0-9 are arranged in a random order to select the sample?

What is the difference between sampling with replacement and sampling without replacement?

Which of the following methods of simple random selection involves using a computer to generate random numbers for sample selection?

Which method of simple random selection involves selecting the sample by progressing along one or more adjacent rows of digits in a table of random numbers?

What is the purpose of thoroughly mixing the cards in the ideal bowl in the Ideal Bowl Method of simple random selection?

Which method of simple random selection involves selecting the sample by using a random number table?

What is the purpose of using simple random sampling?

What is the Advantage of the simple random sampling?

What is the disadvantage of using a Simple Random Sample?

Which method of simple random selection involves using an ideal bowl with a smooth inner surface and folded cards with serial numbers?

What is the Advantages of using Stratified Random sampling?

What is the Methods of allocation of sample size?

Which type of sampling method involves dividing the population into groups and selecting a random sample from each group?

Which type of sampling method involves dividing the population into subgroups and selecting participants from each subgroup?

What is the purpose of using Cluster sampling?

What is the main objective of sampling?

Which type of error arises from inaccuracies in the collection, recording, and processing of data?

Selecting a sampling method:

Which type of sampling method allows for the generalization of results to the population?

What is the disadvantage of using Stratified Random Sampling?

Which sampling method is used when no sampling frame is available?

What is a cluster in the context of Cluster Sampling?

In Cluster Sampling, what is done if clusters are big and of equal size?

What is the main advantage of using Stratified Random Sampling?

Which one of the following is under the Multi-stage Random Sample?

What is the main disadvantage of using Cluster Sampling?

What is the main advantage of using Proportional Allocation?

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