Week 5 (Sampling)

Question 1

Sampling frame

Answer 1

a list of everyone in the population from which you will draw the sample.

Question 2

2 possible problems in random sampling

Answer 2

1, you dont know the population. non probability sampling is the solution.

2, not everyone in the sample cooperates, sampling related error.

Question 3

name all the types of probability samplin

Answer 3

simple random sample
systematic sample
stratified random sample
multi-stage cluster sample

Question 4

name all the non probability samples

Answer 4

convenience sample
snowball sampling
quota sampling

Question 5

three forms of bias

Answer 5

the use of a non-probability sample

incomplete sample (not chosen from entire population)

non response, you could be excluding an entire group.

Question 6

steps of a random sample

Answer 6

determine sampling frame, think of the amount of respondents needed, draw a sample with the use of a random selection tool.

Question 7

what is a stratified random sampling?

Answer 7

a random sample, but different groups of the population are equally represented

Question 8

multistage cluster sampling

Answer 8

multi layers of random samples

Question 9

the size of the sample depends on

Answer 9

absolute size

time plus costs

non-response

sort of analysis

heterogeneity of population

Question 10

what is quota sampling?

Answer 10

stratified sampling, but not random

Question 11

4 errors in research

Answer 11

sampling errors (errors relating to the impossibleness of a 100% representative sample)

sampling related errors (errors resulting from faults in the sampling process)

data collection error

data processing error