Research Methods Flashcards
What three factors are used to decide what statistical test should be used?
Whether you are looking for a difference or correlation
What experimental design is being used
The level of measurement
What experimental designs are classed as related designs?
Repeated measures
Matched pairs
What type of experimental designs are classed as unrelated designs?
Independent groups
What are the three levels of measurement?
Nominal
Ordinal
Interval
What is nominal data?
Represented in the form of categories
Discrete
Can’t be ordered
What is ordinal data?
Can be ordered
A rating scale can be used
Lacks precision as it is based on subjective measures
Scores can be converted into ranks
What is interval data?
Based on numerical scales
Includes units of equal size
What is correlation coefficient
A number between 1 and -1 that represents the direction and strength of a relationship between co-variables
What is a correlation
When a researcher investigated an association between two variables called co variables
What does a correlation coefficient of 1 mean
Perfect positive correlation
What does a correlation coefficient of -1 mean
Perfect negative correlation
What are case studies
In depth investigation, description and analysis of a single individual or group
Strengths of case studies
Offer rich detailed insights
May contribute to understand of ‘normal’ behaviour
May generate hypotheses for future study
