15. SIMPLE RANDOM SAMPLING

Question 1

1. How do we often refer to “Simple Random Sampling”?

Answer 1

• we refer to it as Random Sampling

Question 2

2. What is the most straight forward of all the Random Sampling Methods?

Answer 2

• the Simple Random Sampling Method

Question 3

3. What can be said about all the individuals in the Random Sample?

Answer 3

• they have the same probability of being selected
• this is independent of each other

Question 4

4. What is Simple Random Sampling mostly used for?

Answer 4

• it is used for Quantitative Research

Question 5

5. What does Simple Random Sampling scenario ensure when we have a large sample size?

Answer 5

• random sampling ensures that the chosen individuals
  are representative of the Source Population

Question 6

6. List 2 important factors that often represents the Source Population.

Answer 6

1. DEMOGRAPHY
   - age
   - sex
   - ethnicity
2. OTHER IMPORTANT FACTORS
   - clinical history
   - current disease status
   - lifestyle factors

Question 7

7. What are the 4 steps to Simple Random Sampling?

Answer 7

1. Identify the Source Population
2. Set up the Sampling Frame
3. Decide on the Sample Size
4. Randomly select the individuals from the Sampling
   Frame

Question 8

8. What kinds of techniques can we use for Simple Random Sampling?

Answer 8

• random number generators
• techniques that are based entirely on chance

Question 9

9. What are the 3 advantages of Simple Random Sampling?

Answer 9

1. IT ENSURES THAT:
   - the representative sample is from the Source
   Population
   - this can be done when the sample size is large
   enough
2. IT IS LESS COSTLY
   - it is less time consuming
   - compared o the other sampling methods
3. IT IS IDEAL FOR QUANTITATIVE STUDIES
   - it is ideal for hypothesis testing

Question 10

10. What are the 2 disadvantages of Simple Random Sampling?

Answer 10

1. IF THE SAMPLING FRAME IS TOO LARGE
   - this kind of sampling may be impractical to perform
   - the same applies if the population is geographically
   diverse
2. IF A LARGE SAMPLE IS REQUIRED
   - the Simple Random Sampling may be too time
   consuming and costly