types of data Flashcards
What is a positive correlation ?
As one variable increases so does the other and as one decreases so does the other
What is a negative correlation ?
As one variable increases the other decreases vice versa
What is the weakness of quantitative data ?
Lower ecological validity because there is not enough data therefore can not generalise for real life scenarios
What are the strengths of qualitative data ?
Allows participants to elaborate on their thoughts and feelings
It is rich In depth data
What is a weakness of qualitative data?
Difficult to analysed because there is a range of answers meaning we can’t se overall trends
What is primary data ?
Data that has been specifically collected for the purpose of the purpose of the investigation by the researcher
What is the strength of primary data ?
It is authentic data obtained from the participant themselves for the purpose of a particular investigation
What is secondary data ?
Data that has been collected by someone other than the person who is conducting the research.
data that already exists
What is the strength of secondary data ?
Inexpensive and easily accessed requiring minimal effort if secondary data already exists then there’s no need to collect primary data
what are the strengths of a metà analysis ?
Secondary data do it is less time consuming as experiments don’t need to be carried out
uses data from many different studies which means we can be much more confident about drawing conclusions from what they find
When should a mean be used ?
When there are no extreme data scores
outliers
When should a median be used ?
When should a median be used ?
What is a strength of the mode.?
Shows the more common category in normal data
What is a weakness of using the mode ?
Less sensetive than mean as only a couple values may be used
there is likely to be no mode or more than one
how do we calculate the range ?
Biggest number in the data minus the smallest number in the data
then add 1
What is a negative of using the range ?
Only takes into account the 2 most extreme values so isn’t representative of the whole data set
What is standard deviation ?
How far scores deviate from the mean
What is a strength of standard deviation ?
More precise as it uses all values
What are double negative questions?
2 negatives which really just mean a positive
it creates unecesssry confusion there is a simpler way of asking and the researcher should be clear with their questions
What are the strengths of quantitative data ?
Less Biased as numbers are objective so clear what the answer is therefore it is easier to analyse
What is the weakness of secondary data ?
There may be substantial variation in the quality and accuracy of secondary data. Information might be out dated or incomplete
the content of the data may not match the researchers needs it objectives
What is the weakness of primary data ?
Producing primary data is time consuming
