week 6

Question 1

what is non probability sampling

Answer 1

selecting sample based on non-random criteria
participants chosen based on judgment or convenience

Question 2

which types of research studies use non probability sampling

Answer 2

quasi, direct, correlational, qualitative

Question 3

what is probability sampling

Answer 3

each member of population has known chance of being selected but its random
allows for researchers to make generalisation based on sample

Question 4

which type of research study has probability sampling as a requirement

Answer 4

experimental (and sometimes quasi)

Question 5

that are the four main non probability sampling strategies

Answer 5

purposive
convenience
consecutive
snowball

Question 6

which non probability sampling strategy requires choosing people over a specific time period

Answer 6

consecutive sampling

Question 7

what non probability sampling strategy is similar to a pyramid scheme

Answer 7

snowball sampling

Question 8

what are the four main probability sampling strategies

Answer 8

random
stratified random
cluster
systematic

Question 9

what is stratified random sampling

Answer 9

divide population in to subpopulations and randomly sample from each
i.e. comparing teens to adults

Question 10

what is random sampling

Answer 10

coin toss

Question 11

what is cluster sampling

Answer 11

the population is already divided into separate groups, then select random sample from groups

Question 12

comparing outcomes in different communities would be an example of what kind of probability sampling

Answer 12

cluster

Question 13

what is systematic sampling

Answer 13

choosing a random patter from a list

Question 14

what are the two types of biophysiological measures in quantitative data

Answer 14

in vivo: measuring BP, weight (directly in living things
in vitro: directly extracted from living things (blood sample)

Question 15

what is direct observation (type of qualitative data)

Answer 15

researcher looks for specific events and reactions

Question 16

what is structured self-reported data

Answer 16

framing questions to seek answers (usually sureys, interviews, etc)

Question 17

what are existing records (type of qualitative data)

Answer 17

records/available data

Question 18

what is a phsychometric measurement

Answer 18

an instrument used assess things that aren’t physical
LSAT, Myers briggs

Question 19

what are questions like with psychometric tools

Answer 19

generally closed ended

Question 20

when are measurements usually done (in quantitative studies)

Answer 20

pre and post intervention
pre: gets a baseline data
post: determines influence of intervention