Answer to Question #314379 in Statistics and Probability for Niu_bi

Question

List down 5 of Random Sampling and 5 examplesof Non Random Sampling. Also, identify if what particular random sampling and non sampling techniques are being applied.

First Column

Random Sampling

1.

2.

3.

4.

5.

Second Column

Non Random Sampling

1.

2.

3.

4.

5.

Answer 1

Random Sampling

1. Selecting 100 random students in a school by assigning a number to every student and using a random number generator to select 100 numbers.

Simple random sampling

2. Listing all employees in a company in alphabetical order and selecting every 10^th person in the lost starting at a random number (7,17,27 and so on )

Systematic sampling

3. Dividing church members into gender groups and using random sampling to sample each

Stratified Sampling

4. Randomly sampling 3 branches of a company having 12 roughly identical branches

Cluster sampling

5. Writing down all 100 names in papers and putting them in a bag then randomly selecting 10 from the bag

Simple random sampling

Non random sampling

1. Asking fellow students to complete a survey on a topic

Convenience sampling

2. Sending surveys to all students in the university and some answers them

Voluntary response sampling

3. Selecting a number of students with different support needs in order to gather a varied range of data on their experiences with student services.

Purposive sampling

4. Recruiting an homeless person to help you sample homeless people in the city

Snowball sampling

5. Having your friends take a survey you're conducting

Convenience sampling