Review 4 Flashcards
Types of sampling
. Opportunity
. Self selected
. Snowball
. Random
. Stratified
Opportunity
Anyone who is available and willing to take part in the study
Self selected
People who volunteer
Snowball
Participant are ask to assist in identifying other participants
Random
Every member of the population has an equal chance of being selected
Stratified
Divides population into groups and take a random sample
Types of measuring variables
. Nominal
. Ordinal
. Interval
. Quantitative
. Qualitative
Nominal
(Strengths)
. Large amount of data = High reliability
. Quick to find mode to asses central tendency
Nominal
(Weaknesses)
. Participant may be unable to express response
. Can only use mode as a measure
Ordinal
(Strengths)
. Easy to generate from likert and rating scales
. Median and mode can be used
Ordinal
(Weaknesses)
. Gaps between groups are relative
. Gaps are not equal so mean cant be used
Interval
(Strengths)
. Points are directly comparable cause they are equal
. Scientific measurement = high reliability
Interval
(Weaknesses)
. No absolute baseline to the scale
Quantitative
(Strengths)
. Easy to analyse
. Can show cause and effect
. Can be repeated to test reliability
Quantitative
(Weaknesses)
. Lack of insight
. No context
