Data Handling (Paper 2) Flashcards
What is quantitative data?
Information that is numerical and can be represented visually
What is qualitative data?
Detailed, opinion based information collected from participants
What is a strength and a limitation of quantitative data?
+Easier to analyse and draw conclusions
-Conclusions may lack accuracy because participants could feel forced into choosing a particular response
What is a strength and a limitation of qualitative data?
+Responses are more likely to reflect a participants genuine feelings
-More difficult to analyse and draw conclusions
What is primary data?
Information collected directly by the researcher from participants
What is secondary data?
Information collected by another researcher that is not specific to the study
What are 4 ways of collecting primary data?
o Questionnaires
o Observations
o Interviews
o Experiments
What are 4 ways of conducting secondary data?
o Websites
o Books
o Official statistics
o The media
What is a strength and a limitation of primary data?
+ Data will be wholly relevant to the investigation
- Time consuming and expensive
What is a strength and a limitation of secondary data?
+ Quick and inexpensive to obtain
- Data may not be wholly relevant to the investigation
What are the 3 measures of central tendency?
Mean, median, and mode
What is a strength and a limitation of the mean?
+ Most representative as it takes all scores into account
- Can be easily distorted by extreme values
What is a strength and a limitation of the median?
+ Not affected by extreme scores so could be considered representative
- Does not take all the data into account
What are 2 strengths and 2 limitations of the mode?
+ Not affected by extreme scores
+ Mode can be used with all types of data
-Not useful where there are many or no modes
- Does not take all scores into account so potentially unrepresentative
What are the 2 measures of dispersion?
Range and standard deviation
